re:return a string

(supersedes <mn.f21f7d549c42ea38.15512@xxxxxxxxxxxxxx>)

iru_muzgo wrote on 29/04/05 :
void
ptr_tralha(char *s)
{
while (*s != '\0') /* while the contents of s are different * from NULL */

NULL is off-topic here. You meant 0. The probem is, what makes you think that there is a 0 in the area pointed by s ? And even if there is one, what makes you think that it is at the correct position ?

This is a serious design problem...

		*s++ = '#';	/* s = '#' . increment s */
}

int
main(void)
{
	char            s[5];


As you can see, the contain of is undetermined.

ptr_tralha(s); 

hence, the behaviour is undefined. Anything could happen...

	puts(s);
	return 0;
}


--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html
The C-library: http://www.dinkumware.com/refxc.html

"Clearly your code does not meet the original spec."
"You are sentenced to 30 lashes with a wet noodle."
-- Jerry Coffin in a.l.c.c++

.

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