public static void Main()
Console.Write("Input first number: ");
x = Convert.ToInt32(Console.ReadLine());
Console.Write("Input operation: ");
operation = Convert.ToChar(Console.ReadLine());
Console.Write("Input second number: ");
y = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("{0} + {1} = {2}", x, y, x+y);
Console.WriteLine("{0} - {1} = {2}", x, y, x-y);
else if ((operation=='x') || (operation=='*'))
Console.WriteLine("{0} * {1} = {2}", x, y, x*y);
Console.WriteLine("{0} / {1} = {2}", x, y, x/y);
Console.WriteLine("Wrong Character");