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What does it mean to declare a
1. member function as a virtual
A:
(a) C++ virtual function is member function of any class, whose functionality may be over- ridden in its derived classes. The entire function body might be replaced along with a new set of implementation in derived class. The concept of c++ virtual functions is distinct from C++ Function overloading. The difference among a virtual member function and a non-virtual c++ member function is, the non-virtual member functions are determined at compile time. This mechanism is called as static binding. Whereas the c++ virtual member functions are determined during run-time. This mechanism is called as dynamic binding.
A: A dangling pointer arises while you use the address of an object after its lifetime is end. It may occur in situations such as returning addresses of automatic variables from a
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what is spanning tree? explain prims algorithm spanning tree?
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