public static void Main()
Console.WriteLine("Please enter four numbers to calculate their average:");
double num1 = double.Parse(Console.ReadLine());
double num2 = double.Parse(Console.ReadLine());
double num3 = double.Parse(Console.ReadLine());
double num4 = double.Parse(Console.ReadLine());
double result = CalculateAverage(num1, num2, num3, num4);
Console.WriteLine("The average of the four numbers is: " + result);
public static double CalculateAverage(double num1, double num2, double num3, double num4)
double sum = num1 + num2 + num3 + num4;
double average = sum / 4;