训练营 计算器

package com.tedu;
import java.util.Scanner;
//接收用户输入的两个int类型数值
//按照用户输入1,2,3,4，分别执行相应的+-*/方法 将最后的结果输出至控制台。
public class Test08 {
    public static void main(String[] args) {
        System.out.println("请输入第一个数字");
        int a = new Scanner(System.in).nextInt();
        System.out.println("请输入第二个数字");
        int b = new Scanner(System.in).nextInt();
        System.out.println("请输入要执行的运算");
        int c = new Scanner(System.in).nextInt();
        if (c==1){
            add(a,b);
        }else if (c==2){
            substruction(a,b);
        }else if(c==3){
            multiplication(a,b);
        }else if(c==4){
            division(a,b);
        }
    }
    private static void division(int a, int b) {
        int sum=a/b;
        System.out.println("sum = " + sum);
    }
    private static void multiplication(int a, int b) {
        int sum=a*b;
        System.out.println("sum = " + sum);
    }
    private static void substruction(int a, int b) {
        int sum = a-b;
        System.out.println("sum = " + sum);
    }
    private static void add(int a, int b) {
        int sum=a+b;
        System.out.println("sum = " + sum);
    }
}