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Ahh I thought you were supposed to write the recursive functions without using iteration. Anyway I'm glad you solved your problem.

P.S.

I'm sorry but I, still don't get your idea in the second...

I'm still learning C ...and recursion isn't really my speciality ;), I will have to think a little about it to give an answer.

Anyway I have a question about your second iterative version. Why did...