Answer / prabhakar

virtual function is just like a member function of a class.it is used to over loading mechanisam.it can be acesses by any object of either base class or derived class.
destructor is used to dellocate the memory of an object.it can call by using delete operator.

for example A,B,C,D are class all the 4 class contain one method who() but the method who() implementaion is differnet among each class. the relation among the 4 class are A is base class and is inherited by B and C.and from this two B and C where D is inherited. the question is i want to display the output who() method in all the classes(A,B,C,D)the output of who() method is diferrent amond all the class(A,B,C,D) ------A------ virtuval who(print a) override | | who(print b) B C override who(print c) | | -------D------ override who(print d)

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why overriding?

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what is the difference between function template and template of function?explain with example.

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what uses of c++ language?

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