Matlab Problem

This is a TIC-TAC-TOE game. I need to have a easy mode(makes random move) and a moderate(knows how to block and makes a winning move, otherwise random)

Please help me mofidy the script of the computer move into the moderate mode, so that it could make a winning move and knows how to block the user from making a winning move (The computer script now just makes random move)

I have attached all the scripts needed.

I will rate the answer if it works correctly. Thanks

Script of the Computer Move

= 1) && (num = 4) && (num = 7) && (num