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Question
Explain the different visibility modes through pictorial representation?
Solution
Private visibility mode:
When a base class is inherited with private visibility mode the public and protected members of the base class become ‘private’ members of the derived class.
Protected visibility mode:
When a base class is inherited with protected visibility mode the protected and public members of the base class become ‘protected members’ of the derived class.
Public visibility mode:
When a base class is inherited with public visibility mode, the protected members of the base class will be inherited as protected members of the derived class and the public members of the base class will be inherited as public members of the derived class.
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RELATED QUESTIONS
What is the difference between public and private visibility modes?
What is the difference between the members present in the private visibility mode and the members present in the public visibility mode?
Based on the following class declaration answer the question?
class vehicle
{ int wheels;
public:
void input_data(float,float);
void output_data();
protected:
int passenger;
};
class heavy_vehicle : protected vehicle {
int diesel_petrol;
protected:
int load;
public:
void read_data(float,float)
void write_data(); };
class bus: private heavy_vehicle {
char Ticket[20];
public:
void fetch_data(char);
void display_data(); };
The member function is inherited as public by Class Bus ______
Consider the following c++ code and answer the question?
class Personal
{ int Class,Rno;
char Section;
protected:
char Name[20];
public:
personal();
void pentry();
void Pdisplay(); };
class Marks:private Personal
{ float M{5};
protected:
char Grade[5];
public: Marks();
void Mentry();
void Mdisplay(); };
class Result:public Marks
{
float Total,Agg;
public:
char FinalGrade, Commence[20];
Result();
void Rcalculate();
void Rdisplay();
};
Specify the visibility mode of base classes.
