Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ncar!tank!uxc!uxc.cso.uiuc.edu!osiris.cso.uiuc.edu!hood
From: hood@osiris.cso.uiuc.edu
Newsgroups: comp.unix.xenix
Subject: NULL holy wars and a challenge
Message-ID: <9800002@osiris.cso.uiuc.edu>
Date: 7 Oct 88 17:06:00 GMT
Lines: 73
Nf-ID: #N:osiris.cso.uiuc.edu:9800002:000:1313
Nf-From: osiris.cso.uiuc.edu!hood    Oct  7 12:06:00 1988


I may be starting the "NULL Holy Wars" over again, but I'm *really*
want to know if there is *ANY* machine out there that the following
program will:

	a) not compile
	b) not run (and give the expected output).

I rather doubt there is...

Mind you, I'm not in the least concerned about warning messages from
your compiler... I want to know if it will *RUN* correctly.

Emmet P. Gray				US Army, HQ III Corps & Fort Hood
...!uunet!uiucuxc!fthood!egray		Attn: AFZF-DE-ENV
					Directorate of Engineering & Housing
					Environmental Management Office
					Fort Hood, TX 76544-5057

---------------------------------------------------------------------------
main()
{
	char *p, *s;
	struct junk {
		int i;
		float f;
		char c;
	};

	s = "hello world\n";

	p = s;
	printf("testing '\\0' :\t\t\t");
	while(*p != '\0') {
		putchar(*p);
		p++;
	}

	p = s;
	printf("testing 0 :\t\t\t");
	while(*p != 0) {
		putchar(*p);
		p++;
	}
	
	p = s;
	printf("testing 0L :\t\t\t");
	while(*p != 0L) {
		putchar(*p);
		p++;
	}
	
	p = s;
	printf("testing (char *)0 :\t\t");
	while(*p != (char *)0) {
		putchar(*p);
		p++;
	}
	
	p = s;
	printf("testing (void *)0 :\t\t");
	while(*p != (void *)0) {
		putchar(*p);
		p++;
	}
	
	p = s;
	printf("testing (struct junk *)0 :\t");
	while(*p != (struct junk *)0) {
		putchar(*p);
		p++;
	}
}