Thread: Multidimensional array in C

Hey, Im having trouble understanding how this function prints out this board. mainly how the 2d array is equal in 1 or 2 or 3 or 0.

Code:

void drawboard(int board[6][7]){
    int i;
    int j;
    printf("   1   2   3   4   5   6   7  \n");
    for(i = 5; i >= 0; i = (i - 1))
    {
        for(j = 0; j < 7; j = (j + 1))
        {
            printf(" | ");
            if(board[i][j] == 1)
            {
                printf("X");
            }
            else if(board[i][j] == 2)
            {
                printf("O");
            }
            else if(board[i][j] == 3)
            {
                printf("4");
            }
            else if(board[i][j] == 0);
            {
                printf(" ");
            }
        }
        printf(" | \n");
    }
    printf(" ----------------------------- \n");
}

This function prints out a board for connect 4, and im trying to update it in a turn based way by calling it after I ask a user for what column he wants to drop the piece. So he can choose columns 1 throught 7.
So Im going to update my array to
board[]["whatever column he chose"]. I dont know what to do for the row.
And then the function will take the board and hopefully drop the piece