/**
* FileName: MethodDemo_01
* Author: 86186
* Date: 2021/11/2 21:32
* Description: MethodDemo_01
* History:
* <author> <time> <version> <desc>
* 作者姓名 修改时间 版本号 描述
*/
package com.itheima_01;
import java.util.Scanner;
/**
* 〈一句话功能简述〉<br> 计算器
* 〈MethodDemo_01〉
*
* @author 86186
* @create 2021/11/2
* @since 1.0.0
*/
public class MethodDemo_01 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
while(true){
int a = menu();
if(a == 5){
System.out.println("欢迎下次使用!!!!!!");
break;
}
System.out.print("请输入两个操作数:");
int num_1 = input.nextInt();
int num_2 = input.nextInt();
switch (a){
case 1:
add(num_1,num_2);
break;
case 2:
lose(num_1,num_2);
break;
case 3:
ride(num_1,num_2);
break;
case 4:
divide(num_1,num_2);
break;
}
}

}
//菜单方法
public static int menu(){
Scanner input = new Scanner(System.in);
System.out.println("《-----计算器----》");
System.out.println("功能如下:");
System.out.println("1,加法");
System.out.println("2,减法");
System.out.println("3,乘法");
System.out.println("4,除法");
System.out.println("5,退出系统");
System.out.print("请输入:");
int choice = input.nextInt();
return choice;
}
public static void add(int a,int b){
System.out.println(" " + a + " + " + " " + b + " = " + " " + (a + b));
}
public static void lose(int a,int b){
System.out.println(" " + a + " - " + " " + b + " = " + " " + (a - b));
}
public static void ride(int a,int b){
System.out.println(" " + a + " * " + " " + b + " = " + " " + (a * b));
}
public static void divide(int a,int b){
System.out.println(" " + a + " / " + " " + b + " = " + " " + (a / b));
}


}