Hi all.. this is my first post. I am trying to solve the strings permutation challenge given right here in cprogramming.com, wherein you have to find and print all permutations of a user-entered string. I know the basic concept of permutations by developing factorials of numbers. however i am not able to properly represent the logic in terms of the C syntax. and i dont want to see the solution right away! please help me by giving some guidelines and hints to start developing the code.. thanks..