Question: What Is The Difference Between Constructors And Destructors Mcq?

Which is known as generic class?

Explanation: Template classes are known to be generic classes because those can be used for any data type value and the same class can be used for all the variables of different data types..

Which of the following is correct about destructors?

Correct Answer A destructor has no return type.

Which of the following remarks about the differences between constructors and destructors are correct?

Which of the following remarks about the differences between constructors and destructors are correct ? Constructors can take arguments but destructors cannot. Constructors can be overloaded but destructors cannot be overloaded. Destructors can take arguments but constructors cannot.

What is a constructor Mcq?

Explanation: Constructors are the member functions which are called automatically whenever an object is created. It is a mandatory functions to be called for an object to be created as this helps in initializing the object to a legal initial value for the class.

When a copy constructor is called?

Copy constructor is called when a new object is created from an existing object, as a copy of the existing object. Assignment operator is called when an already initialized object is assigned a new value from another existing object.

Why are constructors and destructors used?

Constructors are special class functions which performs initialization of every object. The Compiler calls the Constructor whenever an object is created. Constructors initialize values to object members after storage is allocated to the object. Whereas, Destructor on the other hand is used to destroy the class object.

Which of the following statement is correct in constructor?

Which of the following statements is correct about constructors?1)Static constructors can use optional arguments.3)If we do not provide a constructor, then the compiler provides a zero-argument constructor.4)Overloaded constructors cannot use optional arguments.5)NULL1 more row

Which is true for constructors in a class?

5. What is true about constructor? Explanation: Constructor returns a new object with variables defined as in the class. Instance variables are newly created and only one copy of static variables are created.

What is the difference between constructors and destructors?

Constructor is called automatically, while the object is created. Destructor is called automatically, as block is exited or program terminates. Constructor allows an object to initialize some of its value before, it is used. Destructor allows an object to execute some code at the time of its destruction.

Which of the following statements is correct about the constructors and destructors Mcq?

Which of the following statements is correct about the constructors and destructors? Destructors can take arguments but constructors cannot. Constructors can take arguments but destructors cannot. Destructors can be overloaded but constructors cannot be overloaded.

How many destructors a class can have?

Destructor rules 2) There cannot be more than one destructor in a class. 3) Unlike constructors that can have parameters, destructors do not allow any parameter. 4) They do not have any return type, just like constructors.

Which of the following statement is correct a constructor is called?

Which of the following statement is correct? A constructor is called at the time of declaration of an object. … A constructor is called at the time of declaration of a class.