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    <p>It's not necessarily true that "each object - when created - will be given space in the HEAP for member variables". Each object you create will take some nonzero space somewhere for its member variables, but where is up to how you allocate the object itself. If the object has automatic (stack) allocation, so too will its data members. If the object is allocated on the free store (heap), so too will be its data members. After all, what is the allocation of an object other than that of its data members?</p> <p>If a stack-allocated object contains a pointer or other type which is then used to allocate on the heap, that allocation will occur on the heap regardless of where the object itself was created.</p> <p>For objects with virtual functions, each will have a vtable pointer allocated as if it were an explicitly-declared data member within the class.</p> <p>As for member functions, the code for those is likely no different from free-function code in terms of where it goes in the executable image. After all, a member function is basically a free function with an implicit "this" pointer as its first argument.</p> <p>Inheritance doesn't change much of anything.</p> <p>I'm not sure what you mean about DLLs getting their own stack. A DLL is not a program, and should have no need for a stack (or heap), as objects it allocates are always allocated in the context of a program which has its own stack and heap. That there would be code (text) and data segments in a DLL does make sense, though I am not expert in the implementation of such things on Windows (which I assume you're using given your terminology).</p>
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    1. POIn C++, where in memory are class functions put?
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    1. COYour assumption "If the object has automatic (stack) allocation, so too will its data members" is not correct. Take a std::vector which is declared as a stack variable. If you insert new values into the vector, it will allocate them on the heap - not on the stack
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    2. COThat is why I also said in my answer "If a stack-allocated object contains a pointer or other type which is then used to allocate on the heap, that allocation will occur on the heap regardless of where the object itself was created." std::vector is commonly implemented as containing three pointers.
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    3. COyou are right, I misunderstood your post
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