Thread: crashes during run time

why is the program crashing when I change 3000 to 4000 on this line
char arrFilename[3000][MAX_PATH + 1];

Code:

#include <stdio.h>
#include <string.h>
#include <dirent.h>
#include <time.h>

main()
{
    int i,j; 
	char path[100] = "c:\\temp";
	// crashes at 4000????
    char arrFilename[3000][MAX_PATH + 1];


	DIR *dir;
    struct dirent *ent;

	dir = opendir(path);

	if (dir != NULL){
		
		j = 0;
		while((ent = readdir (dir)) != NULL) {
			//printf("j = %d fname: %s\n",j,ent->d_name) ;
			//copy string to array
			strcpy(arrFilename[j],ent->d_name);
			j++;
		}
		closedir (dir);
	} else {
      /* could not open directory */
      perror (path);
      //return EXIT_FAILURE;
    } 

    // print array of filenames
    for (i = 0; i < j; ++i) {
        printf("i %d: %s\n",i, arrFilename[i]);

    }
    

	
}