Java第三次作业

1.输入商品单价，数量，求总价。活动8折后抹零，计算活动价。输入付款金额，计算找零并输出。

package homework3;

import java.util.Scanner;

public class Text1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        System.out.println("输入单价");
        int danJia=input.nextInt();
        System.out.println("输入数量");
        int shuLiang=input.nextInt();
        double zongJia=danJia*shuLiang;
        System.out.println("总价为"+zongJia+"元");
        double huoDongjia=zongJia*0.8;
        System.out.println("活动价"+huoDongjia+"元");
        double fuKuan=input.nextDouble();
        double zhaoLing=fuKuan-huoDongjia;
        System.out.println("找零"+zhaoLing+"元");
    }

}

 

 

2.输入一个三位数，求个位，十位和百位。

package homework3;

import java.util.Scanner;

public class Text2 {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
System.out.println("输入三位数");
int a=input.nextInt();
int baiWei=a/100;
int shiWei=a%100/10;
int geWei=a%10;
System.out.println("百位"+baiWei+"\n十位"+shiWei+"\n个位"+geWei);

}

}

 

 

3.输入大写字母，转成对应的小写字母

package homework3;

import java.util.Scanner;

public class Text3 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        System.out.println("输入大写字母");
        String a=input.nextLine();
        char b;
        b=a.charAt(0);
        System.out.println((char)(b+32));
        
     
    }

}

 

 

4.输入2个数，用三目运算符，输出较大数

package homework3;

import java.util.Scanner;

public class Text4 {

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

    }

}