A. The benefits of object-oriented
1. maintainable
2. Reusable
3. Scalable
4. Good flexibility
Object-oriented design inheritance is polymorphism through encapsulation the coupling procedure is reduced so that the program more flexible, easily modified, and easy reuse
1. Packaging
class A{
public:
A(int a){
}
}
2. Inheritance
Virtual inheritance, sometimes diamond inheritance case may occur, then we need to retain only memory structure of a base class to avoid conflicts
class B: public A{
public:
B(int a,int b):A(a){
}
};
class C:public A{
public:
C(int a,int c):A(a){
}
};
//C++允许多继承
class D:public B,public C{
public:
D(int a,int b,int c):B(a,b),C(a,c),A(a){
}
};
3. Polymorphism
4. Abstract
II. Five basic principles of object-oriented
1. Single Responsibility Principle (SRP)
2. Open Closed Principle (OCP)
3. Richter Substitution Principle (LSP)
4. Dependency Inversion Principle (DIP)
5. Interface Segregation Principle (ISP)
III. Functional Programming
IV. Generic Programming