Question

1. A default constructor takes the same number of parameters as the number of private data members.

Select one:

True

False

2. Select all that are true regarding passing an object to a function.

Select one or more:

a. A function cannot take multiple objects as parameters

b. Passing by value creates a copy of the object

c. Passing an object by pointer is not allowed

d. Passing by reference allows the function to modify the object

e. Passing by value allows your program to run the fastest

3.

Select all that are true regarding constructors.

Select one or more:

a. It must have the same name as the class

b. Its return type will always be void

c. A member function that is called when an object goes out of scope

d. There can only ever be one per class

e. It could have no parameters, or any number of parameters

4.

Select all that are true regarding destructors.

Select one or more:

a. Is defined using the keyword "destructor"

b. Is overloaded if it contains multiple parameters

c. Can be used to free up memory that was dynamically allocated by the class

d. Is called when a dynamically allocated object is deleted

e. Is called when the closing curly brace is hit for an object declared within that block

C++ Multiple choice

Answer 1

Dear Student ,

As per requirement submitted above kindly find below solution.

Question 1:

Answer :False

Explanation :

• Default constructor in C++ is a constructor without any argument.
• This menas this is a constructor with no parameter.

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Question 2:

Answer :

c. Passing an object by pointer is not allowed

d. Passing by reference allows the function to modify the object

Explanation :To a function multiple objects can be passed.Function can modified the object.

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Question 3:

Answer :a. It must have the same name as the class

e. It could have no parameters, or any number of parameters

Explanation :

• Constructor in c++ is having the same name as class name without any return type.
• Constructor can be default constructor or parameterized constructor.
• A class can have more than one constructor

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Question 4:

Answer :

c. Can be used to free up memory that was dynamically allocated by the class

e. Is called when the closing curly brace is hit for an object declared within that block

Explanation :Destructor having the same name as class name ,followed with (~).Destructor is used to deallocate the memory

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