How to Convert beween Stack and Heap Objects

Question

Example:

Class *_obj1;
Class *_obj2;

void doThis(Class *obj) {}

void create() {
    Class *obj1 = new Class();
    Class obj2;

    doThis(obj1);
    doThi         


        

Answer 1

Taking the address of a stack variable won't magically transfer it into heap. You need to write a proper copy-constructor for your class and use _obj2 = new Class(obj2);.

As for STL containers, they allocate their data on the heap anyway, why would you want to allocate container itself on the heap? Put them in a scope that will keep them alive as long as you need them.