public static void Main()
Console.WriteLine("What 4 numbers would you like to find the average of?");
double w = double.Parse(Console.ReadLine());
double x = double.Parse(Console.ReadLine());
double y = double.Parse(Console.ReadLine());
double z = double.Parse(Console.ReadLine());
double output = ave(w, x, y, z);
Console.WriteLine("The average of these 4 numbers is " + output + ".");
static private double ave(double w, double x, double y, double z)
return (w + x + y + z)/4;