SimpleCalculator

using System;

namespace SimpleCalc
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Enter first number: ");
            int a = int.Parse(Console.ReadLine());
            Console.Write("Enter second number: ");
            int b = int.Parse(Console.ReadLine());
            Console.Write("Choice operation: ");
            string choice = Console.ReadLine();

            switch (choice)
            {
                case "+":
                    {
                        Console.WriteLine("Result: " + (a + b));
                        Console.ReadKey(true);
                        break;
                    }
                case "*":
                    {
                        Console.WriteLine("Result: "+(a * b));
                        Console.ReadKey(true);
                        break;
                    }
                default:
                    {
                        Console.Write("Invalid operation !");
                        Console.ReadKey(true);
                        break;
                    }
            }
        }
    }
}