How to convert integer to char without C library?

Question

In a c programming exercise I am asked to convert an int to char without using the C library.

Any idea how to go about it?

edit: what I mean by int is the built

Answer 1

For completeness, if the task is to convert int to string as anthares suspects, you can use Mark's second answer to convert each digit of the integer. To get each digit, you have to look into the division and modulo operators.