Page 116 - C Programming

#include <stdio.h>

main()

{ char chk;

do{ outport(0x378,0xaa);

gotoxy(35,13); printf("*0*0*0*0");

delay(2000);

outport(0x378,0x55);

gotoxy(35,13);

printf("0*0*0*0*");

delay(2000);

if(kbhit())

chk=getch();

}while(chk!=27);

}