From:	gah AT jet DOT es (Grzegorz Adam Hankiewicz)
Newsgroups:	comp.os.msdos.djgpp
Subject:	How do I free the allocated memory?
Date:	Wed, 05 Aug 1998 11:37:27 GMT
Organization:	Gogosoftware
Lines:	26
Message-ID:	<35c78e73.7896408@news.jet.es>
NNTP-Posting-Host:	infon132.jet.es
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hello.

I wanted to create a function which accepts a char string, manipulates
it at returns a new one. I thought about this:

char *modify_string ( char *old_str)
{
	char *new_str;

	new_str = malloc (512);  // That's enough for me.
	if (new_str == NULL) return NULL;

	sprintf( new_str, "Blah,blah %s", old_str);

	return new_str;
}

Ok, so I learned that after mallocing some memory I always have to
free it. But know, since I am returning the pointer, I cannot free the
memory before returning the pointer, and I cannot free the memory
after (the compiler will never reach that line).

So, how do I free that allocated mem?

- Grzegorz Adam Hankiewicz - gah AT jet DOT es - http://web.jet.es/gregorio/
- Gogosoftware - http://welcome.to/gogosoftware/

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