Consider the following definition of class Box and main function. Assuming constructor, copy constructor,assignment operator, and destructor of this class are properly without any error implemented, answer thefollowing four questions:class Box {public:Box();~Box ();Box (const Box & source);fr Box& operator= (const Box & rhs);private:int* pointer;};int main (void) {Box X;Box y(x);Box *z= new Box;x = y;return 0; 20. How many times destructor of class Box is calleda. Onceb. Twicec.Three timesd. None of the above

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20. How many times destructor of class Box is called a. Once b. Twice c. Three times d. None of the above

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

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Question

Consider the following definition of class Box and main function. Assuming constructor, copy constructor,
assignment operator, and destructor of this class are properly without any error implemented, answer the
following four questions:
class Box {
public:
Box();
~Box ();
Box (const Box & source);
fr Box& operator= (const Box & rhs);
private:
int* pointer;
};
int main (void) {
Box X;
Box y(x);
Box *z= new Box;
x = y;
return 0;

20. How many times destructor of class Box is called
a. Once
b. Twice
c.
Three times
d. None of the above

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