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       #Post#: 6--------------------------------------------------
       C++ class sizes
       By: avinash.srin Date: August 25, 2011, 9:41 am
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       What is the size of an empty class? What is the size of a class
       with one virtual function? Explain the reasons behind.
       #Post#: 19--------------------------------------------------
       Re: C++ class sizes
       By: avinash.srin Date: August 26, 2011, 6:37 am
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       The size of an empty class in C++ is one byte. This is to make
       sure that two objects don't have the same address.
       The size of a class with one virtual function is four bytes (One
       word). The same for many virtual functions also. This is because
       objects of a class with a virtual function requires space needed
       by the virtual function call mechanism (vptr) - typically one
       word per object.
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