computer.c

/* engine.c */

int indexToBoard(int index) {
        int row, col;

        row = index / 3;
        col = index % 3;

        return board[row][col];
}

int checkForWinPossibility(void) {
	/* Horizontal Check */
	for(i = 0, i < 7, i = i + 3) {
        	if((indexToBoard(i) == 2) && (indexToBoard(i + 1) == 0) && (indexToBoard(i + 2) == 0)) return i;
        	if((indexToBoard(i) == 0) && (indexToBoard(i + 1) == 2) && (indexToBoard(i + 2) == 0)) return i + 1;
        	if((indexToBoard(i) == 0) && (indexToBoard(i + 1) == 0) && (indexToBoard(i + 2) == 2)) return i + 2;
	}

	/* Vertical Check */
	for(i = 0, i < 3, i++) {
        	if((indexToBoard(i) == 2) && (indexToBoard(i + 3) == 0) && (indexToBoard(i + 6) == 0)) return i;
        	if((indexToBoard(i) == 0) && (indexToBoard(i + 3) == 2) && (indexToBoard(i + 6) == 0)) return i + 3;
        	if((indexToBoard(i) == 0) && (indexToBoard(i + 3) == 0) && (indexToBoard(i + 6) == 2)) return i + 6;
	}

	return -1;
}