public static void Main()
Console.WriteLine("5.0 + 4.0 = {0}",GetSum(5.0,4.5));
static void DoubleIt(int x, out int solution)
public static void Swap(ref int num1, ref int num2)
static double GetSum(double x = 1, double y = 1)
static double GetSum(string x = "1", string y = "1")
double dblX = Convert.ToDouble(x);
double dblY = Convert.ToDouble(y);
static double GetSumMore(params double[] nums)
static void PrintInfo(string name, int zipCode)
Console.WriteLine("{0} lives in the zip code {1}",name,zipCode);