class A{ protected: int x, y; public: int z; }; class B: private A{ private: int a, b, c; public:
class A{ protected: int x, y; public: int z; }; class B: private A{ private: int a, b, c; public:
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
Read the question carefully Please answer correctly.

Transcribed Image Text:ii.
Consider the following inheritance hierarchy:
class A{
protected:
int x, y;
public:
int z;
};
class B: private A{
private:
int a, b, c;
public:
void set(int x, int y, int z, int a, int b, int c);
};
Int main(){
Aobja;
B objb;
}
Answer Correctly :
a) How many data members does B have? Write their names.
b) How many of B's data members are visible in B? Write down their names.
c) Which members of B are accessible in main()? How will they be accessed?
d) If the protected Access specifier in A is changed to public, then how many members of B will be
accessed in main() and how?
e) Define the function set() without changing its signature as given above.
f) Write a default constructor for the class B that does not have an empty parameter list.
g) If the data members of A become private, then how they be initialized?
h) Add a static data member in class B. Can we use this pointer with static members? If yes how?
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