using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace 计算器
{
class Program
{
static void Main(string[] args)
{
//先输入第一个数
Console.WriteLine("请输入第一个数:");
int num1 =int.Parse( Console.ReadLine());
//先输入第二个数
Console.WriteLine("请输入第二个数:");
int num2 = int.Parse( Console.ReadLine() );
//选择运算符
Console.WriteLine("请选择运算符:1.+ 2.- 3.x 4./ 5.%");
string fun = Console.ReadLine();
switch (fun)
{
case "1":
case "+":
Console.WriteLine("{0}{1}{2}={3}",num1,fun,num2,num1+num2);
break;
case "2":
case "-":
Console.WriteLine("{0}{1}{2}={3}",num1,fun,num2,num1-num2);
break;
case "3":
Console.WriteLine("{0}{1}{2}={3}",num1,fun,num2,num1*num2);
break;
case "4":
case "/":
if(0 == num2)
{
Console.WriteLine("
分母为0!");
break;
}
Console.WriteLine("{0}{1}{2}={3}",num1,fun,num2,num1/num2);
break;
case "5":
case "%":
if(0 == num2)
{
Console.WriteLine("分母为0!");
break;
}
Console.WriteLine("{0}{1}{2}={3}",num1,fun,num2,num1%num2);
break;
}
Console.ReadLine();
}
}
}