Inheritance in C++ is basically the ability for a class to be able to derive its properties from a different class. It is the most important feature of object oriented programming and allows –
There are three different ways in which we can define relationship between base and derived class while defining inheritance –
class NameOfDerivedClass : (Visibility mode) NameOfBaseClass{
// Data Members and functions
}
In terms of Parent and Child nomenclature –
Outside the class
class NameOfChildClass : (Visibility mode) NameOfParentClass{
// Data Members and functions
}
class A {
public:
int x;
protected:
int y;
private:
int z;
};
class B : public A {
// x stays public
// y stays protected
// z is not accessible from B
};
class C : protected A {
// x becomes protected
// y stays protected
// z is not accessible from C
};
// 'private' is default for classes
class D : private A {
// x becomes private
// y becomes private
// z is not accessible from D
};