// GoodTimeToUsePointer.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

class classA
{
};

class classB
{
public:
    classA PropertOfInstanceA;
    classA* PropertOfInstanceAPointer;
};

classA createInstanceA()
{
    classA instanceA;
    return instanceA;
};

classA* createInstanceAPointer()
{
    classA* instanceAPointer = new classA();
    return instanceAPointer;
};

classB createInstanceBWithInstanceA(classA passedInstanceA)
{
    classB instanceB;
    instanceB.PropertOfInstanceA = passedInstanceA;
    return instanceB;
}

classB createInstanceBWithInstanceAPointer(classA* passedInstanceAPointer)
{
    classB instanceB;
    instanceB.PropertOfInstanceAPointer = passedInstanceAPointer;
    return instanceB;
}

classB* createInstanceBPointerWithInstanceA(classA passedInstanceA)
{
    classB* instanceBPointer = new classB();
    instanceBPointer->PropertOfInstanceA = passedInstanceA;
    return instanceBPointer;
}

classB* createInstanceBPointerWithInstanceAPointer(classA* passedInstanceAPointer)
{
    classB* instanceBPointer = new classB();
    instanceBPointer->PropertOfInstanceAPointer = passedInstanceAPointer;
    return instanceBPointer;
}

int main()
{
    // InstanceA + InstanceB
    classA returnedInstanceAForInstanceB = createInstanceA();
    classB returnedInstanceBWithInstanceA = createInstanceBWithInstanceA(returnedInstanceAForInstanceB);

    // InstanceAPointer + InstanceB
    classA* returnedInstanceAPointerForInstanceB = createInstanceAPointer();
    classB returnedInstanceBWithInstanceAPointer = createInstanceBWithInstanceAPointer(returnedInstanceAPointerForInstanceB);

    // InstanceA + InstanceBPointer
    classA returnedInstanceAForInstanceBPointer = createInstanceA();
    classB* returnedInstanceBPointerWithInstanceA = createInstanceBPointerWithInstanceA(returnedInstanceAForInstanceBPointer);

    // InstanceAPointer + InstanceBPointer
    classA* returnedInstanceAPointerForInstanceBPointer = createInstanceAPointer();
    classB* returnedInstanceBPointerWithInstanceAPointer = createInstanceBPointerWithInstanceAPointer(returnedInstanceAPointerForInstanceBPointer);

}