What is polymorphism in C + +

What is polymorphism in C + +

• Introduction
  Polymorphism (polymorphism), Encapsulation (encapsulation) and inheritance (inheritance) are the "three features" of object-oriented thinking, commonly known as " object-oriented kick ", and polymorphism is the most powerful kill in kick, is an object-oriented, the most subtle internal strength, it can be said, do not understand polymorphism does not know what is object-oriented.

• Defined
  The same action acts on different objects, can have different interpretations, and produces different execution results.
  Simply generalize as "one interface, multiple methods".

• Category
  (1) Polymorphism at compile time.
  ?? The compile-time polymorphism is implemented by overloading . For non-virtual members, the system compiles, depending on the parameters passed, the type of return, and other information to decide what to do. (Refer to my post, "function overloading in C + +")
  (2) The polymorphism of the runtime.
  ?? Runtime polymorphism means that the operation is not determined according to the actual situation until the system is running. In C + +, run-time polymorphism is implemented through virtual members .

• Role
  The purpose of polymorphism is to reuse the interface . In other words, regardless of what is passed to the object of that class, functions can be called through the same interface to adapt to the implementation of the respective object.

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What is polymorphism in C + +