вот эта программа:
using System;
namespace Kolkulator
{
class MainClass
{
public static void Main(string[] args)
{
int num;
int num1;
string sign;
Console.WriteLine("Enter first num: ");
num = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter second num: ");
num1 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter sign: ");
sign = Convert.ToString(Console.ReadLine());
if (sign == "-")
Console.WriteLine("Result: " + (num - num1));
else if(sign == "+")
Console.WriteLine("Result: " + (num + num1));
else if(sign == "*")
Console.WriteLine("Result: " + (num * num1));
else if(sign == "/")
Console.WriteLine("Result: " + (num / num1));
Console.ReadKey();
}
}
}
using System;
namespace Kolkulator
{
class MainClass
{
public static void Main(string[] args)
{
int num;
int num1;
string sign;
Console.WriteLine("Enter first num: ");
num = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter second num: ");
num1 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter sign: ");
sign = Convert.ToString(Console.ReadLine());
if (sign == "-")
Console.WriteLine("Result: " + (num - num1));
else if(sign == "+")
Console.WriteLine("Result: " + (num + num1));
else if(sign == "*")
Console.WriteLine("Result: " + (num * num1));
else if(sign == "/")
Console.WriteLine("Result: " + (num / num1));
Console.ReadKey();
}
}
}

