Question

C++

LAB 8: More Classes

Fill-in-the-Blank Questions

1. Briefly describe what is meant by memberwise assignment

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2. Describe two instances when memberwise assignment occurs.

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3. Describe a situation in which memberwise assignment should not be used.

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4. When is a copy constructor called?

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5. How does the compiler know that a member function is a copy constructor?

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6. What action is performed by a class’s default copy constructor? _____________________________________________________________.

Answer 1

1)

memberwise assignment means each and every member of an object is copied to other objects members.

2)

The two instances when the memberwise assignment can be done is:

By copying one object data to other using = operator

By initializing one object with other object's data using constructor

3)

We can't use the memberwise assignment when the object contains pointer to dynamic allocated memory

4)

A copy constructor is used to copy one objects data to other by passing the object as a parameter to the constructor

5)

If the  constructor parameter reference type is same as class type then it will considered as copy constructor

6)

Copy constructor is one of the ways of memberwise assignment