more on TRUE and FALSE (side-comment)

[Felix Lee]

>Personally I hate 'writing' programs with :
>  if (strcmp(name,"hippo")==0) ....

Try writing this instead:
	IF(strcmp(name, "hippo"), L10, L20, L10)
  L10:	printf("%s is not a hippo\n", name);
	GOTO(L30)
  L20:  printf("a hippo\n");
	GOTO(L30)
  L30:	CONTINUE

And here are the macros that make it possible:

#define IF(e,a,b,c) {int _=(e);if(_<0)GOTO(a)else if(_>0)GOTO(c)else GOTO(b)}
#define GOTO(x) goto x;
#define CONTINUE ;

Exercise for the reader:
* The printf statements are ugly.  Define FORMAT and WRITE statements.
You will probably need functions (in addition to/instead of) macros.
--
Felix Lee	flee at cs.psu.edu