if-else综合测试题

解答：

package 测试;

import java.util.Scanner;

/**
 * @author xcdq.SGS
 * @date 2021/4/12 18:19
 */
public class demo4 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("请输入是否是会员：是（y）/否（其他字符）");
        String isy = input.next();
        System.out.println("请输入购物金额");
        int jine =input.nextInt();
        double bazhe = jine*0.8;
        double qiwuzhe = jine *0.75;
        double jiuzhe = jine*0.9;
        if (isy.equals("y")){
            if (jine <200){
                System.out.println("实际支付：" + bazhe);
            }else if (jine>=200){
                System.out.println("实际支付：" + qiwuzhe);
            }
        }
        if (jine >100){
                System.out.println("实际支付" + jiuzhe);
            }else if (jine < 100){
                System.out.println("实际支付：" + jine);
            }
        }

    }