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From: gamiddleton@orchid.waterloo.edu (Guy Middleton)
Newsgroups: comp.lang.c++
Subject: another probably dumb question
Message-ID: <10148@orchid.waterloo.edu>
Date: Sat, 8-Aug-87 01:16:09 EDT
Article-I.D.: orchid.10148
Posted: Sat Aug  8 01:16:09 1987
Date-Received: Sun, 9-Aug-87 10:51:12 EDT
Distribution: comp
Organization: Waterloo Liberation Army
Lines: 26


I seem to have a problem with destructors.  In this code here:

	#include "string_class.h"

	main( int argc, char *argv[] ) {
		
		string x;

		if ((x = getstr()) != (string) NULL)
			print_string( x );
	}

... the constructor for the string class is called one more time than the
destructor.  If I change it to read:

		x = getstr();
		if (x != (string) NULL)
			print_string( x );

then they get called the same number of times.  I realise I probably
haven't provided enough information here, but I didn't want to post a huge
message.  Does anybody have any idea what might be going on?
__
 -Guy Middleton, University of Waterloo Institute for Computer Research
  gamiddleton@math.waterloo.edu, watmath!gamiddleton, gamiddleton@water.bitnet