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Path: utzoo!linus!decvax!ittvax!dcdwest!sdcsvax!laman
From: laman@sdcsvax.UUCP
Newsgroups: net.lang.c
Subject: Re: C pre-processor and ANSI standard
Message-ID: <47@sdcsvax.UUCP>
Date: Mon, 10-Sep-84 09:57:39 EDT
Article-I.D.: sdcsvax.47
Posted: Mon Sep 10 09:57:39 1984
Date-Received: Sun, 16-Sep-84 08:26:50 EDT
References: <572@calgary.UUCP>, <8214@umcp-cs.UUCP>
Organization: EECS Dept. U.C. San Diego
Lines: 16

If you want a macro to write "n" spaces try:

#define		spaces(n)	printf("%*s", n, "")

This of course will only work on systems that understand a '*' flag in
printf().  The '*' flag goes back to V7, if memory serves me right.

		Mike Laman, NCR @ Torrey Pines
		UUCP: {ucbvax,philabs,sdcsla}!sdcsvax!laman

P.S.  What about a negative "n" you say.  Try:

#define		spaces(n)	printf("%*s", (n <= 0) ? 0 : n, "")

If you want to worry about if-then-elses then go ahead and pull the check
out of the arguments so you can side step the printf.