Software-Engineering
October 6, 20232011 December UGC NET Paper 1
October 6, 2023OOPS
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Question 4
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Let A be the base class in C++ and B be the derived class from A with protected inheritance.
Which of the following statement is false for class B?
Which of the following statement is false for class B?
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Member function of class B can access protected data of class A
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Member function of class access public data of class A
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Member function of class B cannot access private data of class A
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Object of derived class B can access public base class data
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Question 4 Explanation:
A→ Base class
B→ Derived class from A with protected inheritance.
The friend functions and the member functions of a friend class can have direct access to both the PRIVATE and PROTECTED data, the member functions of a derived class can directly access only the PROTECTED data.
However, they can access the PRIVATE data through the member functions of the base class
TRUE: Member function of class B can access protected data of class A
TRUE: Member function of class access public data of class A
FALSE: Member function of class B cannot access private data of class A
TRUE: Object of derived class B can access public base class data
B→ Derived class from A with protected inheritance.
The friend functions and the member functions of a friend class can have direct access to both the PRIVATE and PROTECTED data, the member functions of a derived class can directly access only the PROTECTED data.
However, they can access the PRIVATE data through the member functions of the base class
TRUE: Member function of class B can access protected data of class A
TRUE: Member function of class access public data of class A
FALSE: Member function of class B cannot access private data of class A
TRUE: Object of derived class B can access public base class data
Correct Answer: D
Question 4 Explanation:
A→ Base class
B→ Derived class from A with protected inheritance.
The friend functions and the member functions of a friend class can have direct access to both the PRIVATE and PROTECTED data, the member functions of a derived class can directly access only the PROTECTED data.
However, they can access the PRIVATE data through the member functions of the base class
TRUE: Member function of class B can access protected data of class A
TRUE: Member function of class access public data of class A
FALSE: Member function of class B cannot access private data of class A
TRUE: Object of derived class B can access public base class data
B→ Derived class from A with protected inheritance.
The friend functions and the member functions of a friend class can have direct access to both the PRIVATE and PROTECTED data, the member functions of a derived class can directly access only the PROTECTED data.
However, they can access the PRIVATE data through the member functions of the base class
TRUE: Member function of class B can access protected data of class A
TRUE: Member function of class access public data of class A
FALSE: Member function of class B cannot access private data of class A
TRUE: Object of derived class B can access public base class data