if-else练习

练习1

import  java.util.Scanner;
public class V{
    public static void main(String[] args){
        Scanner s=new Scanner(System.in);
        System.out.println("请输入第一个数");
        int num1=s.nextInt();
        System.out.println("请输入第二个数");
        int num2=s.nextInt();
        System.out.println("请输入第三个数");
        int num3=s.nextInt();
        if (num1>num2) {
            if (num3 < num2)
                System.out.println(num3 + "," + num2 + "," + num1);
            else if (num3 > num1)
                System.out.println(num2 + "," + num1 + "," + num3);
            else
                System.out.println(num2 + "," + num3 + "," + num1);

        }else{
            if (num3<num1)
                System.out.println(num3+","+num1+","+num2);
            else if (num3>num2)
                System.out.println(num1+","+num2+","+num3);
            else
                System.out.println(num1+","+num3+","+num2);
        }
        }
    }

注意：如果if-else if-else条件的执行语句块{}只有一条语句的话，那么这一对{}可以省略
练习2

import  java.util.Scanner;
public class V{
    public static void main(String[] args){
        Scanner s=new Scanner(System.in);
        System.out.println("身高：（cm）");
        int cm=s.nextInt();
        System.out.println("财富：（千万）");
        double money=s.nextDouble();
        System.out.println("帅否：（true/false）");
        Boolean face=s.nextBoolean();
        if (cm>180 && money>1 && face==true){
            System.out.println("我一定要嫁给他！！！");
        }else if (cm>180 || money>1 || face==true) {
            System.out.println("嫁吧，比上不足，比下有余");
        }else{
            System.out.println("不嫁");
        }
        }
    }