Hi everyone I would like to ask if the code below can me modified to a 3x3 array if not I am ok with that too. The variable is board[3][3];

#include <stdio.h>
#include <stdlib.h>

    /************************************
     function prototype
     ***********************************/
    void displayBoard();

    int verifySelection(int, int);

    void checkForWin();

    /************************
     gloobal variables
     ***********************/

    char board[1][9];
    char cWhoWon = ' ';
    int iCurrentPlayer= 0;

    /**************************************
     Begin main function
     ************************************/

    int main(int argc, const char * argv[])

    {
        int x;
        int y;

        int iSquareNum = 0;

        for( x = 0; x < 1; x++){
            for ( y = 0; y < 9; y++){
                if ( x == 0){

                    board[x][y] = ' ';
                }
                    }
        }
        displayBoard();

        while (cWhoWon == ' '){

            printf("\n%c\n", cWhoWon);

            if (iCurrentPlayer == 1 || iCurrentPlayer == 0){

                printf("\nPlayer X\n");
                printf("Enter an available square number (1-9): ");
                scanf("%d", &iSquareNum);

                if( verifySelection(iSquareNum, iCurrentPlayer) == 1)
                    iCurrentPlayer = 1;
                else
                    iCurrentPlayer = 2;
            }

            else {
                printf("\nPlayer 0\n");
                printf("Enter an available square number(1-9): ");
                scanf("%d", &iSquareNum);

                if(verifySelection(iSquareNum,iCurrentPlayer) == 1)
                    iCurrentPlayer = 2;
                else
                    iCurrentPlayer = 1;

            } //end if


            displayBoard();
            checkForWin();

        } // end loop

        return 0;
    } //end main function

    /****************************************************************************************
     begin function definition
     ****************************************************************************************/
    void displayBoard()
    {

        system("clear");
        printf("\n\t\t|\t\t\t|\n");
        printf("\t\t|\t\t\t|\n");
        printf("\t%c\t|\t%c\t\t|\t%c\n", board[0][0], board[0][1], board[0][2]);
        printf("------- | --------- | --------\n");
        printf("\t\t|\t\t\t|\n");
        printf("\t%c\t|\t%c\t\t|\t%c\n", board[0][3], board[0][4], board[0][5]);
        printf("------- | --------- | --------\n");
        printf("\t\t|\t\t\t|\n");
        printf("\t%c\t|\t%c\t\t|\t%c\n", board[0][6], board[0][7], board[0][8]);
        printf("\t\t|\t\t\t|\n");
    } //end function definition

    /****************************************************************************************
     begin function definition
     ****************************************************************************************/

    int verifySelection(int iSquare, int iPlayer){

        if( board[0][iSquare -1] == ' ' && (iPlayer ==1 || iPlayer == 0) ){
            board[0][iSquare - 1] = 'X';
            return 0;
        }
        else if ( board[0][iSquare - 1] == ' ' && iPlayer == 2 ) {
            board[0][iSquare - 1] = 'O';
            return 0;
        }
        else
            return 1;
    }

    void checkForWin()

    {

        int catTotal = 0;
        int x;
        int y;
        if      (board[0][0] == 'X' && board[0][1] == 'X' && board[0][2] == 'X')
            cWhoWon = 'X';
        else if (board[0][3] == 'X' && board[0][4] == 'X' && board[0][5] == 'X')
            cWhoWon = 'X';
        else if (board[0][6] == 'X' && board[0][7] == 'X' && board[0][8] == 'X')
            cWhoWon = 'X';
        else if (board[0][0] == 'X' && board[0][3] == 'X' && board[0][6] == 'X')
            cWhoWon = 'X';
        else if (board[0][1] == 'X' && board[0][4] == 'X' && board[0][7] == 'X')
            cWhoWon = 'X';
        else if (board[0][2] == 'X' && board[0][5] == 'X' && board[0][8] == 'X')
            cWhoWon = 'X';
        else if (board[0][0] == 'X' && board[0][4] == 'X' && board[0][8] == 'X')
            cWhoWon = 'X';
        else if (board[0][2] == 'X' && board[0][4] == 'X' && board[0][6] == 'X')
            cWhoWon = 'X';
        else if (board[0][0] == 'O' && board[0][1] == 'O' && board[0][2] == 'O')
            cWhoWon = 'O';
        else if (board[0][3] == 'O' && board[0][4] == 'O' && board[0][5] == 'O')
            cWhoWon = 'O';
        else if (board[0][6] == 'O' && board[0][7] == 'O' && board[0][8] == 'O')
            cWhoWon = 'O';
        else if (board[0][0] == 'O' && board[0][3] == 'O' && board[0][6] == 'O')
            cWhoWon = 'O';
        else if (board[0][1] == 'O' && board[0][4] == 'O' && board[0][7] == 'O')
            cWhoWon = 'O';
        else if (board[0][2] == 'O' && board[0][5] == 'O' && board[0][8] == 'O')
            cWhoWon = 'O';
        else if (board[0][0] == 'O' && board[0][4] == 'O' && board[0][8] == 'O')
            cWhoWon = 'O';
        else if (board[0][2] == 'O' && board[0][4] == 'O' && board[0][6] == 'O')
            cWhoWon = 'O';

        if (cWhoWon == 'X'){

            printf("\nX Wins!!!\n");
            return;
        }
        if (cWhoWon == 'O'){
            printf("\nO Wins!!!\n");
            return;
        }

        //check for CAT / draw game

        for ( x = 0; x < 1; x++){
            for(y = 0; y < 9; y++){

            if (board[x][y] != ' ')
                catTotal += 1;

        }

        }//end for loop

        if ( catTotal == 9 ) {

            cWhoWon = 'C';

            printf("\nCAT Game!\n");

            return;

        }//end if
    }//end function definition

Sure it can, but it would be better, quicker, and of more value to you, if you wrote your own from scratch.