Bài 7: Nhập xuất dữ liệu trên giao diện Console

[ctimediavietnam]

mình thấy đa số các bạn thiếu phần kiểm tra điểm khống chế.[/size]
vd: toán:6  lý:9  hóa: 10 như vậy dtb =8.3 đáng lẽ đạt giỏi nhưng bị khống chế môn toán vì chỉ có 6 điểm không đạt điều kiện/
3 môn phải đạt từ 6.5 trở lên thì mới tính loại giỏi.[size=15px]

[nguyenhong1007]

ad chấm hộ e bài này vs ạ. đề bài là in các số nguyên tố từ 1 cho đến n, với n được nhập từ bàn phím

[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]baitap [/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]int i[/color][color=#007700],[/color][color=#0000bb]dem[/color][color=#007700],[/color][color=#0000bb]n[/color][color=#007700],[/color][color=#0000bb]k[/color][color=#007700];        [/color][color=#0000bb]int o[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];        [/color][color=#0000bb]scanner input [/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 vào số nguyên n="[/color][color=#007700]);        [/color][color=#0000bb]n [/color][color=#007700]= [/color][color=#0000bb]input[/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]"các số nguyên tố từ 1 đến "[/color][color=#007700]+[/color][color=#0000bb]n[/color][color=#007700]+[/color][color=#dd0000]" là"[/color][color=#007700]);        for ([/color][color=#0000bb]i[/color][color=#007700]=[/color][color=#0000bb]1[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<=[/color][color=#0000bb]n[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]++) {            [/color][color=#0000bb]dem [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700];            for ([/color][color=#0000bb]k[/color][color=#007700]=[/color][color=#0000bb]1[/color][color=#007700];[/color][color=#0000bb]k[/color][color=#007700]<=[/color][color=#0000bb]i[/color][color=#007700];[/color][color=#0000bb]k[/color][color=#007700]++) {                if ([/color][color=#0000bb]i[/color][color=#007700]%[/color][color=#0000bb]k [/color][color=#007700]== [/color][color=#0000bb]0[/color][color=#007700]) {                    [/color][color=#0000bb]dem [/color][color=#007700]= [/color][color=#0000bb]dem [/color][color=#007700]+ [/color][color=#0000bb]1[/color][color=#007700];                }            }            if ([/color][color=#0000bb]dem [/color][color=#007700]== [/color][color=#0000bb]2[/color][color=#007700]) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#dd0000]" "[/color][color=#007700]);                [/color][color=#0000bb]o [/color][color=#007700]= [/color][color=#0000bb]o[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700];                if ([/color][color=#0000bb]o[/color][color=#007700]%[/color][color=#0000bb]20[/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=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]();    }}[/color] 

[daotaoseodanhtieng]

import java.util.scanner;
public class bai7 {

php

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public static void main (string[] args){
int tuoi, namsinh;
float diemtoan, diemly, diemhoa, diemtb;
string ten;
scanner nhapdulieu = new scanner(system.in);
system.out.print("nhap ho va ten:");
ten = nhapdulieu.nextline();
system.out.print("nhap tuoi:");
tuoi = nhapdulieu.nextint();
system.out.print("nhap nam sinh:");
namsinh = nhapdulieu.nextint();
system.out.print("nhap diem toan:");
diemtoan = nhapdulieu.nextfloat();
system.out.print("nhap diem ly:");
diemly = nhapdulieu.nextfloat();
system.out.print("nhap diem hoa:");
diemhoa = nhapdulieu.nextfloat();

diemtb = (diemtoan + diemhoa + diemly)/3;
system.out.println("ho va ten vua nhap:" +ten);
system.out.println("tuoi vua nhap:" + tuoi+ "va nam sinh" + namsinh);
if ( diemtb <=5.5 && diemtb>=0){
system.out.println("ban la hoc sinh trung binh");}
else if ( diemtb > 5.5 && diemtb < 8){
system.out.println("ban la hoc sinh kha");}
else if (diemtb >=8 && diemtb <=10){
system.out.println(" ban la hoc sinh gioi");}
else {
system.out.println("ban da nhap sai diem cua ban!");}
}
}

[thienphu1808]

[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]diemtrungbinh [/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 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].print([/color][color=#dd0000]"nhap ho ten :"[/color][color=#007700]);        [/color][color=#0000bb]string 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].print([/color][color=#dd0000]"nhap nam sinh :"[/color][color=#007700]);        [/color][color=#0000bb]int namsinh[/color][color=#007700]=[/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        while([/color][color=#0000bb]namsinh[/color][color=#007700]<[/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]namsinh[/color][color=#007700]>[/color][color=#0000bb]2012[/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 khong the nho hon 0 or lon hon 2012 "[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap lai nam sinh :"[/color][color=#007700]);            [/color][color=#0000bb]namsinh[/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].print([/color][color=#dd0000]"nhap diem toan :"[/color][color=#007700]);        [/color][color=#0000bb]float toan[/color][color=#007700]=[/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        while([/color][color=#0000bb]toan[/color][color=#007700]<[/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]toan[/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]"diem khong the nho hon 0 or lon hon 10"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap lai diem mon toan: "[/color][color=#007700]);            [/color][color=#0000bb]toan[/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].print([/color][color=#dd0000]"nhap diem mon ly: "[/color][color=#007700]);        [/color][color=#0000bb]float ly[/color][color=#007700]=[/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        while([/color][color=#0000bb]ly[/color][color=#007700]<[/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]ly[/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]"diem ly khong the nho hon 0 or lon hon 10"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap lai diem mon ly: "[/color][color=#007700]);            [/color][color=#0000bb]ly[/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].print([/color][color=#dd0000]"nhap diem mon hoa: "[/color][color=#007700]);        [/color][color=#0000bb]float hoa[/color][color=#007700]=[/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        while([/color][color=#0000bb]hoa[/color][color=#007700]<[/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]hoa[/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]"diem hoa khong the nho hon 0 or lon hon 10"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap lai diem mon hoa: "[/color][color=#007700]);            [/color][color=#0000bb]hoa[/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]"/n"[/color][color=#007700]+[/color][color=#dd0000]"ho ten sinh vien la: "[/color][color=#007700]+[/color][color=#0000bb]hoten[/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]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=#dd0000]"diem mon toan: "[/color][color=#007700]+[/color][color=#0000bb]toan[/color][color=#007700]+[/color][color=#dd0000]" ,mon ly :"[/color][color=#007700]+[/color][color=#0000bb]ly[/color][color=#007700]+[/color][color=#dd0000]" ,mon hoa: "[/color][color=#007700]+[/color][color=#0000bb]hoa[/color][color=#007700]);        [/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]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]"diem trung binh: "[/color][color=#007700]+[/color][color=#0000bb]dtb[/color][color=#007700]);        if([/color][color=#0000bb]dtb[/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 yeu: "[/color][color=#007700]+[/color][color=#0000bb]dtb[/color][color=#007700]);        }        else if([/color][color=#0000bb]dtb[/color][color=#007700]>[/color][color=#0000bb]5 [/color][color=#007700]&& [/color][color=#0000bb]dtb[/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]"hoc sinh trung binh: "[/color][color=#007700]+[/color][color=#0000bb]dtb[/color][color=#007700]);        }        else if([/color][color=#0000bb]dtb[/color][color=#007700]>[/color][color=#0000bb]7 [/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]+[/color][color=#0000bb]dtb[/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 gioi: "[/color][color=#007700]+[/color][color=#0000bb]dtb[/color][color=#007700]);        }    }}[/color] 

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[meocon]

nộp bài nào ^^
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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]demo1 [/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]long nam[/color][color=#007700];        [/color][color=#0000bb]float tb[/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]scanner nhapten [/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 họ và tên: "[/color][color=#007700]);        [/color][color=#0000bb]ten [/color][color=#007700]= [/color][color=#0000bb]nhapten[/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]nhapten[/color][color=#007700].[/color][color=#0000bb]nextlong[/color][color=#007700]();        if ([/color][color=#0000bb]nam [/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]"nhập sai năm sinh."[/color][color=#007700]);        } else {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhập điểm toán, lý, hoá: "[/color][color=#007700]);            [/color][color=#0000bb]toan [/color][color=#007700]= [/color][color=#0000bb]nhapten[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            [/color][color=#0000bb]ly [/color][color=#007700]= [/color][color=#0000bb]nhapten[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            [/color][color=#0000bb]hoa [/color][color=#007700]= [/color][color=#0000bb]nhapten[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();            if ((([/color][color=#0000bb]toan [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]toan [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) || (([/color][color=#0000bb]ly [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]ly [/color][color=#007700]> [/color][color=#0000bb]10[/color][color=#007700])) || (([/color][color=#0000bb]hoa [/color][color=#007700]< [/color][color=#0000bb]0[/color][color=#007700]) || ([/color][color=#0000bb]hoa [/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]"nhập sai điểm."[/color][color=#007700]);            } else {                [/color][color=#0000bb]tb [/color][color=#007700]= (float) ([/color][color=#0000bb]toan [/color][color=#007700]+ [/color][color=#0000bb]ly [/color][color=#007700]+ [/color][color=#0000bb]hoa[/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 trung bình 3 môn: " [/color][color=#007700]+ [/color][color=#0000bb]tb[/color][color=#007700]);                 if ([/color][color=#0000bb]tb [/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]"học lực kém."[/color][color=#007700]);                } else {                    if ([/color][color=#0000bb]tb [/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]"học lực yếu."[/color][color=#007700]);                    } else {                        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]"học lực trung bình."[/color][color=#007700]);                        } else {                            if ([/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]"học lực 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]"học lực giỏi."[/color][color=#007700]);                            }                        }                    }                }            }        }    }}[/color] 

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chấm điểm: 10 điểm​

sau khi nhập tên, sao cứ phải nhấn enter 2 lần thì mới chuyển sang nhập năm sinh nhỉ, lại còn cách dòng nữa.

giả sử mình nhập sai năm sinh thì nhập lại dc nhưng chương trình không chạy tiếp mà dừng ở chỗ nhập lai năm sinh

[vnline668]

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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];[/color][color=#ff8000]/**** @author admin*/[/color][color=#007700]public class [/color][color=#0000bb]bai7_1 [/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 nhapdulieu [/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 ten[/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]"nhập họ và tên: "[/color][color=#007700]);        [/color][color=#0000bb]ten [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/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]namsinh [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/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]"nhập điểm toán: "[/color][color=#007700]);        [/color][color=#0000bb]toan [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/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]ly [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/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]hoa [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextfloat[/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]toan [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700]|| [/color][color=#0000bb]ly [/color][color=#007700]> [/color][color=#0000bb]10 [/color][color=#007700]|| [/color][color=#0000bb]hoa [/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"[/color][color=#007700]);        }else {            [/color][color=#0000bb]float dtb[/color][color=#007700];            [/color][color=#0000bb]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]3[/color][color=#007700];            if([/color][color=#0000bb]dtb [/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]"trung bình"[/color][color=#007700]);            }else 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]"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]"giỏi"[/color][color=#007700]);            }        }    }}[/color] 

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

[salesman12341]

public static void main(string[] args)
{
int soluong;
float tuoi,dt,dl,dh,dtb;
string hoten[];
string timten;
scanner nhaplieu=new scanner(system.in);
// todo code application logic here
system.out.println("nhap so luong sinh vien :
");
soluong=nhaplieu.nextint();
hoten=new string[100];
for(int i=0;i<soluong;i++)
{
system.out.println("nhap ten sinh vien thu i:
" +i);
hoten=nhaplieu.next();
}
system.out.println("nhap ten sv can tim:
");
timten=nhaplieu.next();

for(int i=0;i<soluong;i++)
{
if(timten.equals(hoten)==true)
{
system.out.println("ten muon tim nam o vi tri thu:"+i);
break;
}
}
system.out.println("nhap tuoi sinh vien:
");
tuoi=nhaplieu.nextfloat();

system.out.println("nhap diem toan cua sinh vien:
");
dt=nhaplieu.nextfloat();

system.out.println("nhap diem hoa sv:
");
dh=nhaplieu.nextfloat();

system.out.println("nhap diem ly sc:
");
dl=nhaplieu.nextfloat();

dtb=(dt+dl+dh)/3;

system.out.println("ho ten sv la:");
system.out.println("
diem toan sv:"+dt);
system.out.println("
diem ly sv:" +dl);
system.out.println("
diem hoa sv:"+dh);
system.out.println(" diem tbsv sv:"+dtb);
}

[quanngoi01]

bai 1<div class="bbcodeblock bbcodequote bbcmspoilerblock">
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[color=#000000]
package helloword[/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]helloword [/color][color=#007700]{        [/color][color=#ff8000]/**     * @param args the command line arguments     */    [/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]double toan[/color][color=#007700],[/color][color=#0000bb]li[/color][color=#007700],[/color][color=#0000bb]hoa[/color][color=#007700], [/color][color=#0000bb]namsinh[/color][color=#007700],[/color][color=#0000bb]trungbinh[/color][color=#007700];        [/color][color=#0000bb]string ten[/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].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap ten"[/color][color=#007700]);        [/color][color=#0000bb]ten[/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].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap tuoi"[/color][color=#007700]);        [/color][color=#0000bb]namsinh[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextdouble[/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 diem toan"[/color][color=#007700]);        [/color][color=#0000bb]toan[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextdouble[/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 diem li"[/color][color=#007700]);        [/color][color=#0000bb]li[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextdouble[/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 diem hoa"[/color][color=#007700]);        [/color][color=#0000bb]hoa[/color][color=#007700]=[/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]nextdouble[/color][color=#007700]();        [/color][color=#0000bb]trungbinh[/color][color=#007700]=([/color][color=#0000bb]toan[/color][color=#007700]+[/color][color=#0000bb]li[/color][color=#007700]+[/color][color=#0000bb]hoa[/color][color=#007700])/[/color][color=#0000bb]3[/color][color=#007700];        if ([/color][color=#0000bb]trungbinh[/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]"xep loai gioi"[/color][color=#007700]);        else{ if([/color][color=#0000bb]trungbinh[/color][color=#007700]>=[/color][color=#0000bb]6[/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]"xep loai kha"[/color][color=#007700]);        else {if ([/color][color=#0000bb]trungbinh[/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]"xep loai trung binh"[/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]"xep loai yeu"[/color][color=#007700]);        }        }}}[/color] 

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

[laodaigia]

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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]bai7demo [/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 name[/color][color=#007700];        [/color][color=#0000bb]int birthday[/color][color=#007700];        [/color][color=#0000bb]float math[/color][color=#007700], [/color][color=#0000bb]sp[/color][color=#007700], [/color][color=#0000bb]ch[/color][color=#007700], [/color][color=#0000bb]avag[/color][color=#007700];        [/color][color=#0000bb]scanner ds [/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]"name is: "[/color][color=#007700]);        [/color][color=#0000bb]name [/color][color=#007700]= [/color][color=#0000bb]ds[/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]"birthday is: "[/color][color=#007700]);        [/color][color=#0000bb]birthday [/color][color=#007700]= [/color][color=#0000bb]ds[/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]"điểm math: "[/color][color=#007700]);        [/color][color=#0000bb]math [/color][color=#007700]= [/color][color=#0000bb]ds[/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]"điểm sp: "[/color][color=#007700]);        [/color][color=#0000bb]sp [/color][color=#007700]= [/color][color=#0000bb]ds[/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]"điểm ch: "[/color][color=#007700]);        [/color][color=#0000bb]ch [/color][color=#007700]= [/color][color=#0000bb]ds[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();        [/color][color=#0000bb]avag [/color][color=#007700]= ([/color][color=#0000bb]math [/color][color=#007700]+ [/color][color=#0000bb]sp [/color][color=#007700]+ [/color][color=#0000bb]ch[/color][color=#007700])/[/color][color=#0000bb]3[/color][color=#007700];        if([/color][color=#0000bb]avag [/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 "[/color][color=#007700]+[/color][color=#0000bb]name[/color][color=#007700]+[/color][color=#dd0000]" đạt thành tích giỏi!"[/color][color=#007700]);        }        else if ([/color][color=#0000bb]6.5 [/color][color=#007700]<= [/color][color=#0000bb]avag [/color][color=#007700]&& [/color][color=#0000bb]avag [/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 "[/color][color=#007700]+[/color][color=#0000bb]name[/color][color=#007700]+[/color][color=#dd0000]" đạt thành tích khá!"[/color][color=#007700]);        }        else if ([/color][color=#0000bb]5 [/color][color=#007700]<= [/color][color=#0000bb]avag [/color][color=#007700]&& [/color][color=#0000bb]avag [/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]"hoc sinh "[/color][color=#007700]+[/color][color=#0000bb]name[/color][color=#007700]+[/color][color=#dd0000]" đạt thành tích trung bình!"[/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 "[/color][color=#007700]+[/color][color=#0000bb]name[/color][color=#007700]+[/color][color=#dd0000]" đạt thành tích yếu!"[/color][color=#007700]);        }        }}[/color] 

</blockquote></div>
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[hoathienthaoco]

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[color=#000000]
package edu[/color][color=#007700].[/color][color=#0000bb]ducky[/color][color=#007700].[/color][color=#0000bb]basic[/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]demo [/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]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]dtb[/color][color=#007700];[/color][color=#0000bb]scanner nhapdulieu [/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 hoten:"[/color][color=#007700]);[/color][color=#0000bb]hoten [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/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 ngay sinh:"[/color][color=#007700]);[/color][color=#0000bb]namsinh [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();if ([/color][color=#0000bb]namsinh [/color][color=#007700]<= [/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]namsinh [/color][color=#007700]> [/color][color=#0000bb]2014[/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 ngay sinh"[/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]dtoan [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/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]dly [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/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]dhoa [/color][color=#007700]= [/color][color=#0000bb]nhapdulieu[/color][color=#007700].[/color][color=#0000bb]nextfloat[/color][color=#007700]();    [/color][color=#0000bb]dtb [/color][color=#007700]= (float) ([/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]"diem trung binh:" [/color][color=#007700]+ [/color][color=#0000bb]dtb[/color][color=#007700]);    }}[/color] 

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