Java第三次作业

1.

package Homework;

import java.util.Scanner;

public class ma3 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input =new Scanner(System.in);
        System.out.println("输入交换前a,b的值");
        int a=input.nextInt();
        int b=input.nextInt();
        int c;
        System.out.println("a="+a+"\t"+"b="+b+"\t");
        c=a;
        a=b;
        b=c;
        System.out.println("a="+a+"\t"+"b="+b+"\t");
    }

}

 

 

2.

package Homework;

import java.util.Scanner;

public class ma3 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input =new Scanner(System.in);
        System.out.println("输入两个数a,b的值");
        int a=input.nextInt();
        int b=input.nextInt();
        System.out.println(a*a+b*b);
    }

}

 

 

3.

package Homework;

import java.util.Scanner;

public class ma1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        System.out.println("商品单价");
        double prise=input.nextDouble();
        System.out.println("商品数量");
        double number=input.nextDouble();
        System.out.println("商品总价为");
        double allprise=prise*number;
        System.out.println(allprise);
        System.out.println("八折活动价抹零后为");
        System.out.println(allprise*0.8-allprise*0.8%1);
        System.out.println("付款金额为");
        double money=input.nextDouble();
        System.out.println("找零为");
        System.out.println(money-(allprise*0.8-allprise*0.8%1));
          
    }

}

 

 

4.

package Homework;

import java.util.Scanner;

public class ma1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input = new Scanner(System.in);
        System.out.println("输入一个三位数");
        int num = input.nextInt();
        int ge = num % 10;
        System.out.println("个位是" + ge);
        int shi = num / 10 % 10;
        System.out.println("十位是" + shi);
        int bai = num / 100;
        System.out.println("百位是" + bai);
    }

}

 

 

5.

package Homework;

import java.util.Scanner;

public class ma1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input =new Scanner(System.in);
        System.out.println("任意输入一个大写字母");
        String m=input.next();
        char n;
        n=m.charAt(0);
        System.out.println((char)(n+32));
    }

}

 

 

6.

package Homework;

import java.util.Scanner;

public class ma1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input = new Scanner(System.in);
        System.out.println("输入两个数");
        int a = input.nextInt();
        int b = input.nextInt();
        int max=a>b?a:b;
        System.out.println("输出较大数"+max);
    }

}