using System;
public class Program
{
public static void Main()
Int32 num1 =0 ;
Int32 num2 =0 ;
Int32 result =0 ;
string choice;
Console.WriteLine("Calculator in C#");
Console.Write ("Enter 1st number:");
num1= Convert.ToInt32 (Console.ReadLine());
Console.Write("(+,×,*,/)");
choice= Console.ReadLine ();
if (choice =="/")
result= num1 / num2;
}
if (choice =="+")
result= num1 + num2;
if (choice =="-")
result= num1 - num2;
if (choice =="*")
result= num1 * num2;
Console.Write ("result is {0}", result);
Console.ReadKey ();