第22天
求和
public class HS_Loop1 { public static void main(String[] args) { int i=1,sum=0; while(i<=100){ sum=sum+i; i++; } System.out.println("100以内的和:"+sum); } } 求均分
import java.util.Scanner; public class HS_Loop3 { public static void main(String[] args) { String name; double sum=0,score; double avg=0; System.out.println("请输入姓名:"); Scanner input= new Scanner(System.in); name=input.next(); for(int i=1;i<=5;i++){ System.out.print("请输入5门功课的第"+i+"门功课的成绩:"); Scanner input2=new Scanner(System.in); score=input2.nextDouble(); sum=sum+score; } avg=sum/5; System.out.println(name+"的平均分是:"+avg); } }
import java.util.Scanner; public class HS_Loop6 { public static void main(String[] args) { for(int i=1;i<10;i++){ if(i==5){ System.out.println("循环提前结束"); break; } System.out.println(" "+i); } } }