troubleshooting Question

How to instantiate class within a class?

Avatar of deleyd
deleydFlag for United States of America asked on
7 Comments4 Solutions635 ViewsLast Modified:
Say I have a class ClassMain, and ClassMain needs to have a pointer to a ClassA. If I do the following:
#pragma once
#include "ClassA.h"

class ClassMain
	ClassA *aPtr;
#include "StdAfx.h"
#include "ClassMain.h"

	ClassA a;
	aPtr = &a;
My question is about creating the instance a of ClassA in the constructor of ClassMain. It looks like a will go out of scope the moment the constructor finishes executing, leaving my pointer aPtr pointing to an object that is all ready for garbage collection.

Is that a problem?

And while I'm at it I might as well ask how this would be done using an initialization list. Or is there an even better way of doing this?

(This will be an unmanaged code project. I like defining ClassA a at compile time rather than using a new statement.)
Join our community to see this answer!
Unlock 4 Answers and 7 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 4 Answers and 7 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros