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C++ – How to create an interface or an abstract class?

By venkatPosted on March 18, 2014Posted in C++

An interface is a contract between a caller and a callee. An interface doesn’t provide any implementation. It provides a blueprint. C++ uses a virtual keyword to create an interface or an abstract class. Let’s take an example: class IHello { public: virtual void SayHello() = 0; }; IHello is an interface with the SayHello […]

C++ – How to define virtual functions?

By venkatPosted on March 13, 2014Posted in C++

C++ is a Object Oriented language. C++ uses virtual keyword in different places. One of the use of virtual keyword is to create virtual functions. An important feature in Object Oriented programming is Polymorphism; which means multiple-behaviors. An object has multiple behaviors and it shows particular behavior depending on its context. C++ achieves this with […]