Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!timbuk!cs.umn.edu!ux.acs!edh
From: edh@ux.acs.umn.edu (Eric "The Mentat Philosopher" Hendrickson)
Newsgroups: comp.lang.c
Subject: Is there a good example of how toupper() works?
Message-ID: <2466@ux.acs.umn.edu>
Date: 16 Oct 90 18:29:21 GMT
Reply-To: edh@ux.acs.umn.edu (Eric D. Hendrickson)
Organization: Frobozz Magic Amulet of Yendor Company
Lines: 35

Basically, what I want to do is take a string of upper/lower case, and make
it all upper case.  Here is a first try at it,


#include <ctype.h>
main()
{
	char *duh = "Hello";
	printf("%s\n", duh);
	while (*duh <= strlen(duh)) {
		if (islower(*duh)) *duh = toupper(*duh);
		*duh++;
	}
	printf("%s\n", duh);
}

And what I get is :

Hello
Hello

What I want is:

Hello
HELLO

Can anybody point out a good way of doing this?

Thanks much,
			Eric Hendrickson
-- 
/----------"Oh carrots are divine, you get a dozen for dime, its maaaagic."--
|Eric (the "Mentat-Philosopher") Hendrickson	  Academic Computing Services
|edh@ux.acs.umn.edu	   The game is afoot!	      University of Minnesota
\-"What does 'masochist' and 'amnesia' mean?   Beats me, I don't remember."--