#define PRINTINT(m) \
do {xxi=21; chr='Q'; xhf=10.5; printf("%-15s is %3d\n", #m, (m)); } while (0)
#define PRINTDBL(m) \
do {xxi=21; chr='Q'; xhf=10.5; printf("%-15s is %6.2f\n", #m, (m)); } while (0)

  PRINTINT(9 / 4.0 * 3) ;
  PRINTINT(chr = xhf) ;