public static void Main()
Console.WriteLine("Enter 3 numbers");
Console.Write("Number 1 : ");
number1 = int.Parse(Console.ReadLine());
Console.Write("Number 2 : ");
number2 = int.Parse(Console.ReadLine());
Console.Write("Number 3 : ");
number3 = int.Parse(Console.ReadLine());
all = number1 * number2 * number3;
Console.WriteLine("Number +");
Console.WriteLine("Number -");