cassy_tiles.c

[klaxa@localhost Development]$ cat cassy_tiles.c 
#include <stdio.h>

int main() {
for(int x = 0; x < 800; x+=256) { for (int y = 0; y < 480; y+=256) { printf("%dx%d\n", x, y); } }
}
[klaxa@localhost Development]$ gcc cassy_tiles.c -std=c99 -o cassy_tiles
[klaxa@localhost Development]$ ./cassy_tiles 
0x0
0x256
256x0
256x256
512x0
512x256
768x0
768x256