
#include "stdio.h"
#include "graphics.h"
main()
{
int i,j,driver=VGA,mode=VGAHI;
initgraph ( &driver,&mode,"" );
setbkcolor ( YELLOW );
for ( i=50; i<=230; i+=20 )
for ( j=50; j<=230; j++ )
putpixel ( i,j,1 );
for ( j=50; j<=230; j+=20 )
for ( i=50; i<=230; i++ )
putpixel ( i,j,1 );
}



