public static void Main()
double first, second, result;
Console.Write("Ievadiet pirmo ciparu: ");
first = Convert.ToDouble(Console.ReadLine());
Console.Write("ievadiet otro ciparu: ");
second = Convert.ToDouble(Console.ReadLine());
Console.Write("ievadiet kādu no dotajām darbībām (+, -, *, /): ");
op = (char)Console.Read();
Console.WriteLine("{0} + {1} = {2}", first, second, result);
Console.WriteLine("{0} - {1} = {2}", first, second, result);
Console.WriteLine("{0} * {1} = {2}", first, second, result);
Console.WriteLine("{0} / {1} = {2}", first, second, result);
Console.WriteLine("Invalid Operator");