Recursive Function

Question

Write a recursive function that returns a string and that takes 1 string
parameter. Each invocation of the function should concatenate the string 
parameter to itself. So, if the string "duck" was passed in, it should return
the string "duckduck".  The recursion should stop when the length of the string exceeds 100.

Vulpes · Answer

Try: using System; class Program { static void Main() { string s = duck; s = Concatenate(s); Console.WriteLine(s); Console.ReadKey(); } static string Concatenate(string s) { while(s.Length { s = Concatenate(s + s); } return s; } }