第四周作业

1.for 循环

package test;
import java.util.Scanner;
public class ree{

    public static void main(String[] args) {
    int sum=0;
    int i=1;
    for(;i<101;i++){
        if(i%3==0){
        sum=sum +i;
        }
        else{
        }
    }
    System.out.println(sum);
        }
        }

while循环

package test;
import java.util.Scanner;
public class ree{

    public static void main(String[] args) {
    int sum=0;
    int i=1;
    while(i<101){
        if(i%3==0){
            sum=sum+i;
            i++;
        }
        else{
            i++;
        }
    }
    System.out.println(sum);
        }
        }

do-while 循环

package test;
import java.util.Scanner;
public class ree{

    public static void main(String[] args) {
    int sum=0;
    int i=1;
    do{
        if(i%3==0) {
            sum+=i;
            }
            i++;
        }while(i<=100);
        System.out.println("1到100之间所有能被3整除的整数的和为："+sum);
                 }
    }

2.

package test;
import java.util.Scanner;
public class ree{

    public static void main(String[] args) {
        for(int i=0;i<10;i++){
            if(i!=5){
                System.out.println(i);
            }
                else {
                    
                }
            }
        }
    }

3.

package test;
import java.util.Scanner;
public class ree{

    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.print("请输入一个整数n：");
        int n=sc.nextInt();
        int jc=1;
        for(int i=n;i>=1;i--) {
            jc*=i;
        }
        System.out.println("您输入的整数阶乘为："+jc);
                 }
    }

4.

package test;
import java.util.Scanner;
public class ree{

    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        for(int i=0;;i++){
            System.out.println("请输入学生的成绩：");
            int score=sc.nextInt();
            if(score<0||score>100){
                System.out.println("您输入的成绩错误，请重新输入!");
            }
            else{
                System.out.println("这位学生的成绩为："+score);
                break;
            }
            }
                
            }
        }
                
    

5.

package test;
import java.util.Scanner;
public class ree{

    public static void main(String[] args) {
         int i = 0;
            double n = 30000;
            double sum = n;
            for (i = 0; i <= 9; i++) {
                n = n * (1+0.06);
                sum = sum+ n;
            }
            System.out.println("该员工10年后的年薪:" + n);
            System.out.println("该员工10年内的总收入:" + sum);
        }

    }