Thread: Passing 2D array to a function

Edit: Thanks for all the answers.

Hi,

How do I pass 2D array to a function correctly?

Here's my code which doesn't work.

Code:

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

#define MAX_ROW    2
#define MAX_COLUMN 2

void display_seats(char **);

int main(void)
{
    char seats[MAX_ROW][MAX_COLUMN] = { 0 };
//    int input_row, input_column;
    int i, j;
    
    /* Init the row  and columns */
    for(i = 0; i < MAX_ROW; i++)
    {
        for(j = 0; j < MAX_COLUMN; j++)
        {                        
            seats[i][j] = 'X';
        }   
    }

    display_seats(seats);

    return EXIT_SUCCESS;
}

void display_seats(char **seats)
{
    int i, j;
    
    for(i = 0; i < MAX_ROW; i++)
    {
        for(j = 0; j < MAX_COLUMN; j++)
        {                        
            printf("%c", seats[i][j]);
        }
        printf("\n");   
    }
}

MSVC++ 6 gives me two warnings,
warning C4047: 'function' : 'char ** ' differs in levels of indirection from 'char [2][2]'
warning C4024: 'display_seats' : different types for formal and actual parameter 1

Thanks.

&seats[0] - I think that should work

>Any reason why it has to be declared/used that way?

http://www.eskimo.com/~scs/C-faq/q6.18.html