what is the virtual function overhead, and what is it used
for ? i hope i can get and appropriate answers, thanks a lot....
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Answer Posted / vadivel
virtual function supports run-time polymorphrism. Ovarhead
is run-time has to create 'virtual' table.
'Derived' class object can be stored in the 'base' class
pointer. Using 'base' class pointer, client can call base
class method but not in the derived class method; if client
wants to call the derived class method then based method
should declare as virtual.
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