Originally Posted by durgaprasad
mr.gandalf irequest u to write a program in c that allows the user to play tic tac toe with computer
Why do you want him to write for you when we already have couple of threads having the same.

Tic-Tac-Toe Game in C
TicTacToe in Plain C without using BGI graphics

Also dont jump into some article with your query. Instead try giving your query a new thread with good title to get good responses.