Bài 7: Nhập xuất dữ liệu trên giao diện Console

[chuonggoinhanvien]

sao mình viết theo bài mẫu của tia sáng bị lỗi này:
description resource path location type
resource leak: 'nhapdulieu' is never closed demo.java /javabasic/src/edu/ducky/basic line 10 java problem

[linhthui1111]

<div class="bbcodeblock bbcodequote bbcmspoilerblock">
<div class="attribution type"><noscript>diemtb (move your mouse to reveal the content)</noscript>

diemtb (open)
diemtb (close)

</div>
<div class="quotecontent">
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</div>
</div>package hello;
import java.util.scanner;
public class scannerdemo {
public static void main(string[] args)
{
float diemtb;
string hoten;
int namsinh;
float diemtoan;
float diemly;
float diemhoa;
scanner a = new scanner(system.in);
system.out.print("nhap ho ten sinh vien: ");
hoten=a.nextline();
system.out.print("nhap nam sinh sv: ");
namsinh=a.nextint();
system.out.print("nhap diem toan cua sv: ");
diemtoan=a.nextfloat();
system.out.print("nhap diem ly cua sv: ");
diemly=a.nextfloat();
system.out.print("nhap diem hoa cua sv: ");
diemhoa=a.nextfloat();
diemtb=(diemtoan+diemly+diemhoa)/3;
if(diemtb>8.5)
{
system.out.println("sinh vien:"+hoten+"
nam sinh:"+namsinh+"
diem tb:"+diemtb+"
dat loai gioi");
}
else if(diemtb>7 && diemtb<8.5)
{
system.out.println("sinh vien:"+hoten+"
nam sinh:"+namsinh+"
diem tb:"+diemtb+"
dat loai kha");
}
else
{
system.out.println("sinh vien:"+hoten+"
nam sinh:"+namsinh+"
diem tb:"+diemtb+"
dat loai tb");
}
}
}

[hieuraovat4]

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<div class="bbcm_spoiler_noscript"><blockquote>
package hello;
import java.util.scanner;
public class scannerdemo {
public static void main(string[] args)
{
float diemtb;
string hoten;
int namsinh;
float diemtoan;
float diemly;
float diemhoa;
scanner a = new scanner(system.in);
system.out.print("nhap ho ten sinh vien: ");
hoten=a.nextline();
system.out.print("nhap nam sinh sv: ");
namsinh=a.nextint();
system.out.print("nhap diem toan cua sv: ");
diemtoan=a.nextfloat();
system.out.print("nhap diem ly cua sv: ");
diemly=a.nextfloat();
system.out.print("nhap diem hoa cua sv: ");
diemhoa=a.nextfloat();
diemtb=(diemtoan+diemly+diemhoa)/3;
if(diemtb>8.5)
{
system.out.println("sinh vien:"+hoten+"
nam sinh:"+namsinh+"
diem tb:"+diemtb+"
dat loai gioi");
}
else if(diemtb>7 && diemtb<8.5)
{
system.out.println("sinh vien:"+hoten+"
nam sinh:"+namsinh+"
diem tb:"+diemtb+"
dat loai kha");
}
else
{
system.out.println("sinh vien:"+hoten+"
nam sinh:"+namsinh+"
diem tb:"+diemtb+"
dat loai tb");
}
}
}
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</div>

[liendienlanh]

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[color=#000000]
package hello[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];public class [/color][color=#0000bb]scannerdemo [/color][color=#007700]{public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]){[/color][color=#0000bb]float diemtb[/color][color=#007700];[/color][color=#0000bb]string hoten[/color][color=#007700];[/color][color=#0000bb]int namsinh[/color][color=#007700];[/color][color=#0000bb]float diemtoan[/color][color=#007700];[/color][color=#0000bb]float diemly[/color][color=#007700];[/color][color=#0000bb]float diemhoa[/color][color=#007700];[/color][color=#0000bb]scanner a [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap ho ten sinh vien: "[/color][color=#007700]);[/color][color=#0000bb]hoten[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap nam sinh sv: "[/color][color=#007700]);[/color][color=#0000bb]namsinh[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem toan cua sv: "[/color][color=#007700]);[/color][color=#0000bb]diemtoan[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem ly cua sv: "[/color][color=#007700]);[/color][color=#0000bb]diemly[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem hoa cua sv: "[/color][color=#007700]);[/color][color=#0000bb]diemhoa[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#0000bb]diemtb[/color][color=#007700]=([/color][color=#0000bb]diemtoan[/color][color=#007700]+[/color][color=#0000bb]diemly[/color][color=#007700]+[/color][color=#0000bb]diemhoa[/color][color=#007700])/[/color][color=#0000bb]3[/color][color=#007700];if([/color][color=#0000bb]diemtb[/color][color=#007700]>[/color][color=#0000bb]8.5[/color][color=#007700]){[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"sinh vien:"[/color][color=#007700]+[/color][color=#0000bb]hoten[/color][color=#007700]+[/color][color=#dd0000]" nam sinh:"[/color][color=#007700]+[/color][color=#0000bb]namsinh[/color][color=#007700]+[/color][color=#dd0000]" diem tb:"[/color][color=#007700]+[/color][color=#0000bb]diemtb[/color][color=#007700]+[/color][color=#dd0000]" dat loai gioi"[/color][color=#007700]);}else if([/color][color=#0000bb]diemtb[/color][color=#007700]>[/color][color=#0000bb]7 [/color][color=#007700]&& [/color][color=#0000bb]diemtb[/color][color=#007700]<[/color][color=#0000bb]8.5[/color][color=#007700]){[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"sinh vien:"[/color][color=#007700]+[/color][color=#0000bb]hoten[/color][color=#007700]+[/color][color=#dd0000]" nam sinh:"[/color][color=#007700]+[/color][color=#0000bb]namsinh[/color][color=#007700]+[/color][color=#dd0000]" diem tb:"[/color][color=#007700]+[/color][color=#0000bb]diemtb[/color][color=#007700]+[/color][color=#dd0000]" dat loai kha"[/color][color=#007700]);}else{[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"sinh vien:"[/color][color=#007700]+[/color][color=#0000bb]hoten[/color][color=#007700]+[/color][color=#dd0000]" nam sinh:"[/color][color=#007700]+[/color][color=#0000bb]namsinh[/color][color=#007700]+[/color][color=#dd0000]" diem tb:"[/color][color=#007700]+[/color][color=#0000bb]diemtb[/color][color=#007700]+[/color][color=#dd0000]" dat loai tb"[/color][color=#007700]);}}    }[/color] 

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[duongbk123_vip2]

a xem cho e cái..sao chạy đoạn điều kiện nó sai rồi mà vẫn chạy tiếp phần xuatdulieu @@


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[color=#000000]
import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700]; public class [/color][color=#0000bb]studyjavamain [/color][color=#007700]{     public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {        [/color][color=#0000bb]sinhvien sv [/color][color=#007700]= new [/color][color=#0000bb]sinhvien[/color][color=#007700]();        [/color][color=#0000bb]sv[/color][color=#007700].[/color][color=#0000bb]nhapdulieu[/color][color=#007700]();        [/color][color=#0000bb]sv[/color][color=#007700].[/color][color=#0000bb]dieukien[/color][color=#007700]();        [/color][color=#0000bb]sv[/color][color=#007700].[/color][color=#0000bb]xuatdulieu[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]gc[/color][color=#007700]();    }} class [/color][color=#0000bb]sinhvien [/color][color=#007700]{    public [/color][color=#0000bb]string hoten[/color][color=#007700];    public [/color][color=#0000bb]long nam[/color][color=#007700];    public [/color][color=#0000bb]float a[/color][color=#007700], [/color][color=#0000bb]b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700];                public [/color][color=#0000bb]void nhapdulieu[/color][color=#007700]() {            [/color][color=#0000bb]scanner s [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhập tên sinh viên: "[/color][color=#007700]);            [/color][color=#0000bb]hoten [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhập năm sinh: "[/color][color=#007700]);            [/color][color=#0000bb]nam [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextlong[/color][color=#007700]();            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhập điểm toán: "[/color][color=#007700]);            [/color][color=#0000bb]a [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhập điểm lý: "[/color][color=#007700]);            [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhập điểm hóa: "[/color][color=#007700]);            [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();              }              public [/color][color=#0000bb]void dieukien[/color][color=#007700]() {            if (([/color][color=#0000bb]a [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]a [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"bạn đã nhập sai điểm toán vui lòng nhập lại!"[/color][color=#007700]);            }else if (([/color][color=#0000bb]b [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]b [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"bạn đã nhập sai điểm lý vui lòng thử lại!"[/color][color=#007700]);            }else if (([/color][color=#0000bb]c [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]c [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"bạn đã nhập sai điểm hóa vui lòng nhập lại!"[/color][color=#007700]);            }else{                      }        }                    public [/color][color=#0000bb]void xuatdulieu[/color][color=#007700]() {            [/color][color=#0000bb]float diemtrungbinh [/color][color=#007700]= (([/color][color=#0000bb]a [/color][color=#007700]+ [/color][color=#0000bb]b [/color][color=#007700]+ [/color][color=#0000bb]c[/color][color=#007700]) / [/color][color=#0000bb]3[/color][color=#007700]);                  [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"sinh viên: " [/color][color=#007700]+ [/color][color=#0000bb]hoten[/color][color=#007700]);            if ([/color][color=#0000bb]diemtrungbinh [/color][color=#007700]>= [/color][color=#0000bb]8.0[/color][color=#007700]) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"là sinh viên giỏi"[/color][color=#007700]);            }else if (([/color][color=#0000bb]diemtrungbinh [/color][color=#007700]< [/color][color=#0000bb]8[/color][color=#007700]) && ([/color][color=#0000bb]diemtrungbinh [/color][color=#007700]>= [/color][color=#0000bb]6.5[/color][color=#007700])) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"là sinh viên khá"[/color][color=#007700]);            }else if (([/color][color=#0000bb]diemtrungbinh [/color][color=#007700]<[/color][color=#0000bb]6.5[/color][color=#007700]) && ([/color][color=#0000bb]diemtrungbinh [/color][color=#007700]>= [/color][color=#0000bb]5.0[/color][color=#007700])) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"là sinh viên trung bình"[/color][color=#007700]);            }else if (([/color][color=#0000bb]diemtrungbinh [/color][color=#007700]< [/color][color=#0000bb]5[/color][color=#007700]) && ([/color][color=#0000bb]diemtrungbinh [/color][color=#007700]>= [/color][color=#0000bb]3.5[/color][color=#007700])) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"là sinh viên yếu"[/color][color=#007700]);            }else{                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"là sinh viên kém"[/color][color=#007700]);            }        }}[/color] 

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[donghoqueenwatch]

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[color=#000000]
package javabasic[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];public class [/color][color=#0000bb]nhapdata [/color][color=#007700]{ public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {[/color][color=#0000bb]string ten[/color][color=#007700];[/color][color=#0000bb]float tuoi[/color][color=#007700], [/color][color=#0000bb]toan[/color][color=#007700], [/color][color=#0000bb]ly[/color][color=#007700], [/color][color=#0000bb]hoa[/color][color=#007700], [/color][color=#0000bb]tb[/color][color=#007700];[/color][color=#0000bb]scanner kb [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập vào tên học sinh: "[/color][color=#007700]);[/color][color=#0000bb]ten [/color][color=#007700]=[/color][color=#0000bb]kb[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập vào năm sinh: "[/color][color=#007700]);[/color][color=#0000bb]tuoi [/color][color=#007700]=[/color][color=#0000bb]kb[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập vào điểm toán: "[/color][color=#007700]);[/color][color=#0000bb]toan[/color][color=#007700]=[/color][color=#0000bb]kb[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập vào điểm lý: "[/color][color=#007700]);[/color][color=#0000bb]ly[/color][color=#007700]=[/color][color=#0000bb]kb[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập vào điểm hóa: "[/color][color=#007700]);[/color][color=#0000bb]hoa[/color][color=#007700]=[/color][color=#0000bb]kb[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#0000bb]tb[/color][color=#007700]= ([/color][color=#0000bb]hoa[/color][color=#007700]+[/color][color=#0000bb]ly[/color][color=#007700]+[/color][color=#0000bb]toan[/color][color=#007700])/[/color][color=#0000bb]3[/color][color=#007700];if( [/color][color=#0000bb]toan [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]ly [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]hoa [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) {[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" đã nhập sai điểm"[/color][color=#007700]);}if( [/color][color=#0000bb]tb [/color][color=#007700]<[/color][color=#0000bb]5[/color][color=#007700]) {[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"hoc sinh yếu"[/color][color=#007700]);}else if ([/color][color=#0000bb]tb[/color][color=#007700]>=[/color][color=#0000bb]5 [/color][color=#007700]&& [/color][color=#0000bb]tb [/color][color=#007700]<[/color][color=#0000bb]7[/color][color=#007700]) {[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" học sinh trung binh "[/color][color=#007700]);}else if ([/color][color=#0000bb]tb[/color][color=#007700]>=[/color][color=#0000bb]7 [/color][color=#007700]&& [/color][color=#0000bb]tb[/color][color=#007700]<=[/color][color=#0000bb]8[/color][color=#007700]) {[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" hoc sinh khá "[/color][color=#007700]);}else[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" hoc sinh giỏi"[/color][color=#007700]);} }[/color] 

</blockquote></div>
</div>
</div>

[pccc5sao]

[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]nhapxuat [/color][color=#007700]{        public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {        [/color][color=#0000bb]string hoten[/color][color=#007700];        [/color][color=#0000bb]float t[/color][color=#007700], [/color][color=#0000bb]l[/color][color=#007700], [/color][color=#0000bb]h[/color][color=#007700], [/color][color=#0000bb]tb[/color][color=#007700];        [/color][color=#0000bb]int ns[/color][color=#007700];        [/color][color=#0000bb]scanner nhap [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ten:"[/color][color=#007700]);        [/color][color=#0000bb]hoten [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nam sinh:"[/color][color=#007700]);        [/color][color=#0000bb]ns [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"toan:"[/color][color=#007700]);        [/color][color=#0000bb]t [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ly:"[/color][color=#007700]);        [/color][color=#0000bb]l [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"hoa:"[/color][color=#007700]);        [/color][color=#0000bb]h [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        if (([/color][color=#0000bb]t [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]t [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700]) || ([/color][color=#0000bb]l [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]l [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700]) || ([/color][color=#0000bb]h [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]h [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ban nhap diem sai! "[/color][color=#007700]);        } else {            [/color][color=#0000bb]tb [/color][color=#007700]= ([/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#0000bb]h[/color][color=#007700]) / [/color][color=#0000bb]3[/color][color=#007700];                if ([/color][color=#0000bb]tb [/color][color=#007700]> [/color][color=#0000bb]8.5[/color][color=#007700]) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ho ten: " [/color][color=#007700]+ [/color][color=#0000bb]hoten [/color][color=#007700]+ [/color][color=#dd0000]"
 nam sinh:" [/color][color=#007700]+ [/color][color=#0000bb]ns [/color][color=#007700]+ [/color][color=#dd0000]"
 diem 3 mon: toan: " [/color][color=#007700]+ [/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#dd0000]"
 ly: " [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#dd0000]"
 hoa: " [/color][color=#007700]+ [/color][color=#0000bb]h [/color][color=#007700]+ [/color][color=#dd0000]"
 diem trung binh:" [/color][color=#007700]+ [/color][color=#0000bb]tb [/color][color=#007700]+ [/color][color=#dd0000]"
 dat hoc sinh gioi"[/color][color=#007700]);            }            if ([/color][color=#0000bb]tb [/color][color=#007700]> [/color][color=#0000bb]6.5[/color][color=#007700]) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ho ten: " [/color][color=#007700]+ [/color][color=#0000bb]hoten [/color][color=#007700]+ [/color][color=#dd0000]"
 nam sinh:" [/color][color=#007700]+ [/color][color=#0000bb]ns [/color][color=#007700]+ [/color][color=#dd0000]"
 diem 3 mon: toan: " [/color][color=#007700]+ [/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#dd0000]"
 ly: " [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#dd0000]"
 hoa: " [/color][color=#007700]+ [/color][color=#0000bb]h [/color][color=#007700]+ [/color][color=#dd0000]"
 diem trung binh:" [/color][color=#007700]+ [/color][color=#0000bb]tb [/color][color=#007700]+ [/color][color=#dd0000]"
 dat hoc sinh kha"[/color][color=#007700]);            } else {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ho ten: " [/color][color=#007700]+ [/color][color=#0000bb]hoten [/color][color=#007700]+ [/color][color=#dd0000]"
 nam sinh:" [/color][color=#007700]+ [/color][color=#0000bb]ns [/color][color=#007700]+ [/color][color=#dd0000]"
 diem 3 mon: toan: " [/color][color=#007700]+ [/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#dd0000]"
 ly: " [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#dd0000]"
 hoa: " [/color][color=#007700]+ [/color][color=#0000bb]h [/color][color=#007700]+ [/color][color=#dd0000]"
 diem trung binh:" [/color][color=#007700]+ [/color][color=#0000bb]tb [/color][color=#007700]+ [/color][color=#dd0000]"
 dat hoc sinh trung binh"[/color][color=#007700]);            }            }    }}[/color] 

sao của mình cứ phải nhập điểm các môn là 7,5 mà ấn ở chỗ bàn phím số là 7.5 thì báo lỗi
nhưng lúc chạy nó ghi điểm trung bình lại là dấu x.y chứ không phải x,y

[khanhvinpearl]

<div class="bbcodeblock bbcodequote bbcmspoilerblock">
<div class="attribution type"><noscript>bài 1 (move your mouse to reveal the content)</noscript>

bài 1 (open)
bài 1 (close)

</div>
<div class="quotecontent">
<div class="bbcm_spoiler_noscript"><blockquote>

[color=#000000]
package baitapvenha[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];[/color][color=#ff8000]/*** từ màn hình console, nhập dữ liệu của 1 sinh viên là họ và tên, năm sinh,* điểm toán, lý , hóa (kiểu số thực). dựa vào điểm trung bình 3 môn in ra đó là* học sinh giỏi, khá hay trung bình**/[/color][color=#007700]public class [/color][color=#0000bb]buoi7bai1 [/color][color=#007700]{    public [/color][color=#0000bb]string xeploai[/color][color=#007700]([/color][color=#0000bb]float dtoan[/color][color=#007700], [/color][color=#0000bb]float dly[/color][color=#007700], [/color][color=#0000bb]float dhoa[/color][color=#007700]) {        [/color][color=#0000bb]string xloai [/color][color=#007700]= [/color][color=#dd0000]""[/color][color=#007700];         [/color][color=#0000bb]float dtoanb [/color][color=#007700]= ([/color][color=#0000bb]dtoan [/color][color=#007700]+ [/color][color=#0000bb]dly [/color][color=#007700]+ [/color][color=#0000bb]dhoa[/color][color=#007700]) / [/color][color=#0000bb]3[/color][color=#007700];        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"  điểm toán:\t"[/color][color=#007700]+[/color][color=#0000bb]dtoan[/color][color=#007700]+[/color][color=#dd0000]"  điểm lý:\t"[/color][color=#007700]+[/color][color=#0000bb]dly[/color][color=#007700]+[/color][color=#dd0000]"  điểm hóa:\t"[/color][color=#007700]+[/color][color=#0000bb]dhoa[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"tổng điểm: "[/color][color=#007700]+([/color][color=#0000bb]dtoan [/color][color=#007700]+ [/color][color=#0000bb]dly [/color][color=#007700]+ [/color][color=#0000bb]dhoa[/color][color=#007700]));        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"điểm tb  : "[/color][color=#007700]+[/color][color=#0000bb]dtoanb[/color][color=#007700]);        if ([/color][color=#0000bb]dtoanb [/color][color=#007700]<= [/color][color=#0000bb]4.5[/color][color=#007700])                 [/color][color=#0000bb]xloai [/color][color=#007700]+= [/color][color=#dd0000]"yếu"[/color][color=#007700];        else if ([/color][color=#0000bb]4.5 [/color][color=#007700]< [/color][color=#0000bb]dtoanb [/color][color=#007700]&& [/color][color=#0000bb]dtoanb [/color][color=#007700]< [/color][color=#0000bb]6.5[/color][color=#007700])                 [/color][color=#0000bb]xloai [/color][color=#007700]+= [/color][color=#dd0000]"trung bình"[/color][color=#007700];        else if ([/color][color=#0000bb]6.5 [/color][color=#007700]<= [/color][color=#0000bb]dtoanb [/color][color=#007700]&& [/color][color=#0000bb]dtoanb [/color][color=#007700]< [/color][color=#0000bb]8.5[/color][color=#007700])                 [/color][color=#0000bb]xloai [/color][color=#007700]+= [/color][color=#dd0000]"khá"[/color][color=#007700];        else                 [/color][color=#0000bb]xloai [/color][color=#007700]+= [/color][color=#dd0000]"giỏi"[/color][color=#007700];        return [/color][color=#0000bb]xloai[/color][color=#007700];    }    public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {          [/color][color=#0000bb]string ho[/color][color=#007700], [/color][color=#0000bb]tensv[/color][color=#007700];          [/color][color=#0000bb]int namsinh[/color][color=#007700];          [/color][color=#0000bb]float dtoan[/color][color=#007700], [/color][color=#0000bb]dly[/color][color=#007700], [/color][color=#0000bb]dhoa[/color][color=#007700];          [/color][color=#0000bb]buoi7bai1 test [/color][color=#007700]= new [/color][color=#0000bb]buoi7bai1[/color][color=#007700]();          [/color][color=#0000bb]scanner sc [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap thong tin sinh vien : "[/color][color=#007700]);          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"ho       :\t"[/color][color=#007700]); [/color][color=#0000bb]ho [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"ten sv   :\t"[/color][color=#007700]); [/color][color=#0000bb]tensv [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();          do {                  [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nam sinh :\t"[/color][color=#007700]);                  [/color][color=#0000bb]namsinh [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();                  if ([/color][color=#0000bb]namsinh [/color][color=#007700]< [/color][color=#0000bb]1000[/color][color=#007700])                         [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"chi nhap nam sinh cua nhung ban>=1000"[/color][color=#007700]);            } while ([/color][color=#0000bb]namsinh [/color][color=#007700]< [/color][color=#0000bb]1000[/color][color=#007700]);            do {                   [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"diem toan:\t"[/color][color=#007700]);                   [/color][color=#0000bb]dtoan [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();                   [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"diem ly :\t"[/color][color=#007700]);                   [/color][color=#0000bb]dly [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();                   [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"diem hoa :\t"[/color][color=#007700]);                   [/color][color=#0000bb]dhoa [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();                   if ([/color][color=#0000bb]0 [/color][color=#007700]> [/color][color=#0000bb]dtoan [/color][color=#007700]|| [/color][color=#0000bb]dtoan [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700]|| [/color][color=#0000bb]0 [/color][color=#007700]> [/color][color=#0000bb]dly [/color][color=#007700]|| [/color][color=#0000bb]dly [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700]|| [/color][color=#0000bb]0 [/color][color=#007700]> [/color][color=#0000bb]dhoa[/color][color=#007700]|| [/color][color=#0000bb]dhoa [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700]) {                             [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap sai du lieu, yeu cau nhap lai!!!"[/color][color=#007700]);                   }          } while ([/color][color=#0000bb]0 [/color][color=#007700]> [/color][color=#0000bb]dtoan [/color][color=#007700]|| [/color][color=#0000bb]dtoan [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700]|| [/color][color=#0000bb]0 [/color][color=#007700]> [/color][color=#0000bb]dly [/color][color=#007700]|| [/color][color=#0000bb]dly [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700]|| [/color][color=#0000bb]0 [/color][color=#007700]> [/color][color=#0000bb]dhoa[/color][color=#007700]|| [/color][color=#0000bb]dhoa [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700]);          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nam sinh :\t"[/color][color=#007700]); [/color][color=#0000bb]namsinh [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"diem toan:\t"[/color][color=#007700]); [/color][color=#0000bb]dtoan [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"diem ly  :\t"[/color][color=#007700]); [/color][color=#0000bb]dly [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"diem hoa :\t"[/color][color=#007700]); [/color][color=#0000bb]dhoa [/color][color=#007700]= [/color][color=#0000bb]sc[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"sinh vien vua nhap : "[/color][color=#007700]);          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ho va ten: "[/color][color=#007700]+[/color][color=#0000bb]ho[/color][color=#007700]+[/color][color=#dd0000]" "[/color][color=#007700]+[/color][color=#0000bb]tensv[/color][color=#007700]);          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"năm sinh: "[/color][color=#007700]+[/color][color=#0000bb]namsinh[/color][color=#007700]);          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#0000bb]test[/color][color=#007700].[/color][color=#0000bb]xeploai[/color][color=#007700]([/color][color=#0000bb]dtoan[/color][color=#007700], [/color][color=#0000bb]dly[/color][color=#007700], [/color][color=#0000bb]dhoa[/color][color=#007700]));    }}[/color] 

</blockquote></div>
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có test lỗi chỉ nhập năm sinh hơn 1000
điểm chỉ nhập từ 0 đến 10

[nvscomposite]

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[color=#000000]
[/color][color=#007700]public class [/color][color=#0000bb]nhapxuat [/color][color=#007700]{        public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {        [/color][color=#0000bb]string hoten[/color][color=#007700];        [/color][color=#0000bb]float t[/color][color=#007700], [/color][color=#0000bb]l[/color][color=#007700], [/color][color=#0000bb]h[/color][color=#007700], [/color][color=#0000bb]tb[/color][color=#007700];        [/color][color=#0000bb]int ns[/color][color=#007700];        [/color][color=#0000bb]scanner nhap [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ten:"[/color][color=#007700]);        [/color][color=#0000bb]hoten [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nam sinh:"[/color][color=#007700]);        [/color][color=#0000bb]ns [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"toan:"[/color][color=#007700]);        [/color][color=#0000bb]t [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ly:"[/color][color=#007700]);        [/color][color=#0000bb]l [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"hoa:"[/color][color=#007700]);        [/color][color=#0000bb]h [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        if (([/color][color=#0000bb]t [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]t [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700]) || ([/color][color=#0000bb]l [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]l [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700]) || ([/color][color=#0000bb]h [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]h [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ban nhap diem sai! "[/color][color=#007700]);        } else {            [/color][color=#0000bb]tb [/color][color=#007700]= ([/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#0000bb]h[/color][color=#007700]) / [/color][color=#0000bb]3[/color][color=#007700];                if ([/color][color=#0000bb]tb [/color][color=#007700]> [/color][color=#0000bb]8.5[/color][color=#007700]) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ho ten: " [/color][color=#007700]+ [/color][color=#0000bb]hoten [/color][color=#007700]+ [/color][color=#dd0000]"
 nam sinh:" [/color][color=#007700]+ [/color][color=#0000bb]ns [/color][color=#007700]+ [/color][color=#dd0000]"
 diem 3 mon: toan: " [/color][color=#007700]+ [/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#dd0000]"
 ly: " [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#dd0000]"
 hoa: " [/color][color=#007700]+ [/color][color=#0000bb]h [/color][color=#007700]+ [/color][color=#dd0000]"
 diem trung binh:" [/color][color=#007700]+ [/color][color=#0000bb]tb [/color][color=#007700]+ [/color][color=#dd0000]"
 dat hoc sinh gioi"[/color][color=#007700]);            }            if ([/color][color=#0000bb]tb [/color][color=#007700]> [/color][color=#0000bb]6.5[/color][color=#007700]) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ho ten: " [/color][color=#007700]+ [/color][color=#0000bb]hoten [/color][color=#007700]+ [/color][color=#dd0000]"
 nam sinh:" [/color][color=#007700]+ [/color][color=#0000bb]ns [/color][color=#007700]+ [/color][color=#dd0000]"
 diem 3 mon: toan: " [/color][color=#007700]+ [/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#dd0000]"
 ly: " [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#dd0000]"
 hoa: " [/color][color=#007700]+ [/color][color=#0000bb]h [/color][color=#007700]+ [/color][color=#dd0000]"
 diem trung binh:" [/color][color=#007700]+ [/color][color=#0000bb]tb [/color][color=#007700]+ [/color][color=#dd0000]"
 dat hoc sinh kha"[/color][color=#007700]);            } else {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"ho ten: " [/color][color=#007700]+ [/color][color=#0000bb]hoten [/color][color=#007700]+ [/color][color=#dd0000]"
 nam sinh:" [/color][color=#007700]+ [/color][color=#0000bb]ns [/color][color=#007700]+ [/color][color=#dd0000]"
 diem 3 mon: toan: " [/color][color=#007700]+ [/color][color=#0000bb]t [/color][color=#007700]+ [/color][color=#dd0000]"
 ly: " [/color][color=#007700]+ [/color][color=#0000bb]l [/color][color=#007700]+ [/color][color=#dd0000]"
 hoa: " [/color][color=#007700]+ [/color][color=#0000bb]h [/color][color=#007700]+ [/color][color=#dd0000]"
 diem trung binh:" [/color][color=#007700]+ [/color][color=#0000bb]tb [/color][color=#007700]+ [/color][color=#dd0000]"
 dat hoc sinh trung binh"[/color][color=#007700]);            }            }    }}[/color] 

sao của mình cứ phải nhập điểm các môn là 7,5 mà ấn ở chỗ bàn phím số là 7.5 thì báo lỗi
nhưng lúc chạy nó ghi điểm trung bình lại là dấu x.y chứ không phải x,y

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tớ có thấy lỗi đâu bạn @vickutetg ????

[daolephi23]

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[color=#000000]
mport java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];public class [/color][color=#0000bb]kell1 [/color][color=#007700]{    public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {        [/color][color=#0000bb]scanner a[/color][color=#007700]=new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]string hoten[/color][color=#007700];        [/color][color=#0000bb]int namsinh[/color][color=#007700];        [/color][color=#0000bb]float toan[/color][color=#007700],[/color][color=#0000bb]ly[/color][color=#007700],[/color][color=#0000bb]hoa[/color][color=#007700];        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap ten: "[/color][color=#007700]);        [/color][color=#0000bb]hoten[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap nam sinh "[/color][color=#007700]);        [/color][color=#0000bb]namsinh[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem toan"[/color][color=#007700]);        [/color][color=#0000bb]toan[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem ly"[/color][color=#007700]);        [/color][color=#0000bb]ly[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap diem hoa"[/color][color=#007700]);        [/color][color=#0000bb]hoa[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();[/color][color=#ff8000]//        system.out.println("ho ten: "+hoten);//        system.out.println("nam sinh "+namsinh);//        system.out.println("diem toan "+toan);//        system.out.println("diem ly "+ly);//        system.out.println("diem hoa "+hoa);        [/color][color=#0000bb]float dtb[/color][color=#007700]=(([/color][color=#0000bb]toan[/color][color=#007700]+[/color][color=#0000bb]ly[/color][color=#007700]+[/color][color=#0000bb]hoa[/color][color=#007700])/[/color][color=#0000bb]2[/color][color=#007700]);        if([/color][color=#0000bb]dtb[/color][color=#007700]>=[/color][color=#0000bb]8[/color][color=#007700])            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"hoc sinh gioi"[/color][color=#007700]);        else            if([/color][color=#0000bb]dtb[/color][color=#007700]>[/color][color=#0000bb]6.5[/color][color=#007700]&&[/color][color=#0000bb]dtb[/color][color=#007700]<[/color][color=#0000bb]8[/color][color=#007700])                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"hoc sinh kha"[/color][color=#007700]);        else                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"hoc sinh trung binh"[/color][color=#007700]);            }    }[/color] 

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