A. Inaccessible B. Protected C. Protected 9. In inheritance, the order of execution of base class and derived class constructors are: A. Base to derived B. Derived to base C. Random order D. Public D. None of the mentioned
A. Inaccessible B. Protected C. Protected 9. In inheritance, the order of execution of base class and derived class constructors are: A. Base to derived B. Derived to base C. Random order D. Public D. None of the mentioned
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
Q 9 please
Transcribed Image Text:Q1: Choose the correct answer:
1. Which of the following is correct about class and structure?
A. class data members are private by default while that of structure are public by default.
B. Pointer to structure or classes cannot be declared.
C. class data members are public by default while that of structure are private.
D. None of the mentioned
2. class Basel is derived from class Base2 and class Base3 is derived from class Basel. This is
A. Multiple.
B. Multilevel.
C. Hierarchical.
D. Multilevel.
3. Which one of the following options is incorrect?
A. Friend function can access public data members of the class.
B. Friend function can access protected data members of the class.
C. Friend function can't access private data members of the class.
D. All of the above
inheritance
4. The dot operator (class member access operator) connects the following two entities (reading from left to right)
A. A class member and a class object.
B.A class object and a class.
C.A class and a member of that class.
D. A class object and a member of that class.
5. Which of the following concepts provides the facility of using the object of one class inside another class?
A Encapsulation
B. Abstraction
C. Composition
D. Inheritance
6. The syntax of the heading of the operator function is:
A. returnType operator operatorSymbol(parameters)
B. objectName operator operatorSymbol(objectMembers)
C. objectName operator operatorSymbol(parameters)
D. return Type operator operatorName(parameters)
7. Which of the following is not a member of the class?
B. Static Function.
A. Friend Function
C. Inline Function
8. When the mode of inheritance is protected, the public methods (functions) in the base class are
derived class.
A. Inaccessible
B. Protected
C. Protected
D. Public
9. In inheritance, the order of execution of base class and derived class constructors are:
A. Base to derived
B. Derived to base
C. Random order
D. Virtual Function
in the
D. None of the mentioned
Expert Solution
Step 1
9)
Ans:- Option A
In inheritance, execution order of constructors are always from base to derived and destructors call order is in reverse i.e. from derived to base.
In polymorphic classes, means the class that contain virtual functions, we need to make destructor virtual in base class. Other wise the derived class destructor will not be called.
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