#ifdef and #endif

#include <stdio.h>

#define Fouzi /* without using this derective (Macro) the statement (printf) between (#ifdef Fouzi) and (#endif) will not excecute */


main()
{


#ifdef Fouzi                  // the starting of the derective
printf(" HI FOUZI");      // the statement
#endif                         // the end of the directive



    fflush(stdin);
    getchar();

}