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From: drw@cullvax.UUCP
Newsgroups: comp.lang.c
Subject: static variables
Message-ID: <1249@cullvax.UUCP>
Date: Thu, 4-Jun-87 10:54:01 EDT
Article-I.D.: cullvax.1249
Posted: Thu Jun  4 10:54:01 1987
Date-Received: Sat, 6-Jun-87 07:34:23 EDT
Organization: Cullinet Software, Westwood, MA, USA
Lines: 40

jfjr@mitre-bedford.arpa writes:
> Are character strings local to a function static??
> 
> int do_something()
> {
>  char * some_string = "some string"
>  do_things;
>  return(some_int);
> }
> 
> is some_string static??

No, it's automatic.  But the value that it is initialized to is a
pointer to a static object.  Consider,

char *p;

int do_something(x)
	int x;
	{
	char *some_string = "some string";

	if (x)
		{
		p = some_string;
		some_string = malloc(...);
		}
	else
		printf("%d", p == some_string);
	}

This is a valid program, and if you call do_something(1) and then
do_something(0), you get "1" for output.

Dale
-- 
Dale Worley		Cullinet Software
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