How do you determine the size of an object in C++?

Question

For example, say I have a class Temp:

class Temp
{
    public:
        int function1(int foo) { return 1; }
        void function2(int bar) { foobar = bar; }         


        

Answer 1

Member functions dont account for the size of the objects of a particular class. The size of the object depends only on the member variables. In case of classes that contain virtual functions, the VPTR gets added to the object layout. So the size of the objects is basically size of the member variables + the size of the VPTRs. Sometimes this may not be true as Compilers try to locate member variables at the DWORD boundary.