randomizing strings

[threadhead]

hey.
my question is about programming in C.
lets assume that a user inputs the letters "abc".
now an algorithm should try out evey combination
that is possible with these three letters.
like: "abc", "cba", "bca", "bac", "acb", "cab".

how would i implement such a code?

help is appreciated (im really stuck with this ;))

[truls]

This is what is called "permutation" of a string.

Do a search on google for "permutation algorithm" and you'll find plenty of help. You can also search on dejanews. If you were using C++ you could use the STL next_permutation algorithm.

[threadhead]

i figured it out with a little help.

but thanks anyway. ;)