Answer Posted / rupali

we cant make object of abstract class becoz, in the vtable the vtable entry for the abstract class functions will be NULL, which ever are defined as pure virtual functions...

even if there is a single pure virtual function in the class the class becomes as abstract class..

if there is a virtual function in your class the compiler automatically creates a table called virtual function table .. to store the virtual function addresses.... if the function is a pure virtual function the vtable entry for that function will be NULL.

even if there is a single NULL entry in the function table the compiler does not allow to create the object.

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