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' VB6 code.

Public Function AddInts(ByVal x As Integer, ByVal y As Integer) As Integer

AddInts = x + y

End Function

Public Function AddDoubles(ByVal x As Double, ByVal y As Double) As Double

AddDoubles = x + y

End Function

Public Function AddLongs(ByVal x As Long, ByVal y As Long) As Long

AddLongs = x + y

End Function

Not only can code such as this become tough to maintain, but the caller must now be painfully

aware of the name of each method. Using overloading, we are able to allow the caller to call a single

method named Add(). Again, the key is to ensure that each version of the method has a distinct set

of arguments (members differing only by return type are not unique enough). Consider the follow-

ing class definition:

// C# code.

class Program

{

static void Main(string[] args) { }