第三周作业

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

package workother;

import java.util.Scanner;

public class Work1 {

    /**
     * @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));
        
        
        
        
        
        
        
        
    }

}

2.输入一个三位数,求各位,十位和百位.

package workother;

import java.util.Scanner;

public class Work2 {

    /**
     * @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 number=input.nextInt();
        System.out.println("个位为");
        System.out.println(number/100);
        System.out.println("十位为");
        System.out.println(number/10%10);
        System.out.println("百位为");
        System.out.println(number%10);
    }

}

3.输入大写字母,转成对应的小写字母.

package workother;

import java.util.Scanner;

public class Work3 {

    /**
     * @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"); 
        String ch=input.next();
        ch=ch.toLowerCase();
        System.out.println("小写字母为"+ch);
        
        //String a = "A".toLowerCase();   大写变小写
        //String b = "a".toUpperCase();   小写变大写
        //System.out.println(a);
        //System.out.println(b);
        

    }

}

4.输入两个数,用三目运算符,输出较大数.

package workother;

import java.util.Scanner;

public class Work4 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //输入2个数，用三目运算符，输出较大数
        Scanner input=new Scanner(System.in);
        System.out.println("请输入第一个数");
        double a=input.nextDouble();
        System.out.println("请输入第二个数");
        double b=input.nextDouble();
        System.out.println(a>b?a:b);
    }

}