Load and display the first image

Listing 2  loads and displays the starfish image shown at the top in Figure 1.

Listing 2. Load and display the starfish image.
  //Declare a pointer variable capable of pointing to a
  // bitmap.
  BITMAP *picA = NULL;
  //Load an image file from the current directory.
  picA = load_bitmap("starfish.pcx", NULL);
  //Copy the image to the upper-left corner of the
  // onscreen window.
  blit(picA, screen, 0,0,0,0,324,330);

Listing 2 begins by declaring a pointer variable named picA capable of pointing to a BITMAP.