#include <npic.h>

int main ()
{
    int x, y;
    
    Npic_image *np1;
    Npic_image_2l *p1;
    
    /* Create a 2L image = 2D image with signed long pixels (4 bytes). height 
       is ymax=12, width is xmax=20, external borders are ybor=0, xbor=0. */
    np1 = NpicCreateImage_2l (12, 20, 0, 0);
    if (np1 == NULL) exit (1);
    
    /* Assign values to pixels */
    p1 = NpicCastImage (np1);
    for (y = 0; y < p1->ymax; y++)
    for (x = 0; x < p1->xmax; x++)
        p1->pix[y][x] = (x + y) % 16;
  
    /* Print image */
    NpicPrintImage (np1);
    
    /* Destroy image */
    NpicDestroyImage (np1);
    exit(0);
}