Explain pure virtual functions?
Submitted by: MurtazaPure virtual functions are also called 'do nothing functions'.
e.g. virtual void abc() = 0;
When a pure virtual fnction is declared in the base class, the compiler necessitates the derived classes to define those functions or redeclare them are pure virtual functions. The classes containing pure virtual functions cannot be used to declare objects of their own. Such classes are called as abstract base classes.
Submitted by: Murtaza
e.g. virtual void abc() = 0;
When a pure virtual fnction is declared in the base class, the compiler necessitates the derived classes to define those functions or redeclare them are pure virtual functions. The classes containing pure virtual functions cannot be used to declare objects of their own. Such classes are called as abstract base classes.
Submitted by: Murtaza
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