Java第三次作业

1.输入商品单价,数量,求总价.活动八折后抹零,计算活动价.输入付款金额,计算找零并输出.

import java.util.Scanner;
public class chap {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        System.out.println("请输入单价");
        double a=input.nextDouble();
        System.out.println("请输入数量");
        int b=input.nextInt();
        double c,d;
        c=a*b;
        d=c*0.8;
        System.out.println("总价为"+c+"\t"+"折后价"+d);
        System.out.println("请输入付费钱数");
        int e=input.nextInt();
        System.out.println("付费"+e);
        
        System.out.println("找零"+(e-c));

    }

}

2.输入一个三位数,求个位,十位和百位.

import java.util.Scanner;
public class chap {

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





    }

}

3.输入大写字母,转成对应的小写字母.

import java.util.Scanner;
public class chap {

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



    }

}

4.输入2个数,用三目运算符,输出较大数

import java.util.Scanner;
public class chap {

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

    }

}