package com.practise;
public class Calculator {
public int Plus(int a, int b){
return a+b;
}
public int Subtract(int a,int b){
return a-b;
}
public int Multipile(int a,int b){
return a*b;
}
public int Divide(int a,int b){
return a/b;
}
}
package com.practise;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
int s1;
Scanner input=new Scanner(System.in);
System.out.print("请选择运算:1.加法 2.减法 3.乘法 4.除法:");
int select= input.nextInt();
Calculator c=new Calculator();
System.out.print("请输入第一个数:");
int a= input.nextInt();
System.out.print("请输入第二个数:");
int b= input.nextInt();
switch (select){
case 1:
s1=c.Plus(a,b);
System.out.println("***运算结果为:"+s1);
break;
case 2:
s1=c.Subtract(a,b);
System.out.println("***运算结果为:"+s1);
break;
case 3:
s1=c.Multipile(a,b);
System.out.println("***运算结果为:"+s1);
break;
case 4:
s1=c.Divide(a,b);
System.out.println("***运算结果为:"+s1);
default:
break;
}
}
}