Large arrays and images

[sod32]

I want to be able to create a multi-dimensional array that is 512*512 in dimension to represent the pixels in an image:
unsigned char myArray[512][512]
When I compile it (using Borland C++ 3.2) I get an error message saying array size too large. Is there any way I could get around this? Is there a way by using dynamic memory allocation?

Thanks in advance

 

[Lim]

because
char myArray[512][512]; allocate array in stack memory and it is not so big.
Just use dynamic memory:
char (*myArray)[512] = NULL;

myArray = malloc (512 * sizeof (char[512]));
if (myArray == NULL) exit; /* not enough memory */
....
free(myArray);

 

[smaniraja]

You can do like this

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

int main()
{
char (*array)[512];
array = (char(*)[512]) malloc(512 * 512 * sizeof(char));
if(array == NULL)
{
printf(&quot;Not enough memory..&quot;
exit(-1);
}
....
printf(&quot;\n %d %d&quot;, array[0][0], array[511][511]);
....
free(array);
return 0;
}