Generating non-repeating random numbers

Question

I want to create a function in C. It will return a random integer in-range of N like:- rand() % N; but the thing is I want to keep track of uniqueness. I don\'t want the num

Answer 1

It sounds like what you want is really a random permutation of the number 1..N. So, fill an array with consecutive integers 1..N and then shuffle the array. There are well known algorithms for shuffling that you can look up.