How many destructors can a class have
Can there be more than one destructor in a class? No, there can only one destructor in a class with classname preceded by ~, no parameters and no return type.
Can we have constructor as virtual Mcq
There is no concept of virtual constructor in C++ programming.
Which of the following statement is correct about destructors Mcq
Correct Answer : A destructor has no return type.
What is the role of destructor in classes Mcq
What is the role of destructors in Classes? Explanation: Destructors are used in Classes to destroy an object after its lifetime is over i.e. to free resources occupied by that object.
In which case is it mandatory to provide a destructor in a class Mcq
When a class contains dynamic object then it is mandatory to write a destructor function to release memory before the class instance is destroyed this must be done to avoid memory leak.
Which concept is not available in C++? Mcq
Q) Features not available in C++ object oriented programming is. There is no concept of virtual constructor available in C++. However, virtual destructor is available in C++ language to maintain the destructor call from derived to base class.
Which of the following is the correct about class destructor
Correct Answer: Destructor destroys the complete object. 4.
What is purpose of virtual destructor
A virtual destructor is used to free up the memory space allocated by the derived class object or instance while deleting instances of the derived class using a base class pointer object.
Can we have virtual destructor in C++ Mcq
There is no concept of virtual constructor available in C++. However, virtual destructor is available in C++ language to maintain the destructor call from derived to base class.
Which among the following describes a destructor Mcq
Which among the following best describes destructor? Explanation: The Destructors are special functions which are called just before an object is destroyed. This functions is responsible to free all the allocated resources to the object. Objects are destroyed whenever those go out of scope.
Can destructor be virtual
Yes, it is possible to have a pure virtual destructor. Pure virtual destructors are legal in standard C++ and one of the most important things to remember is that if a class contains a pure virtual destructor, it must provide a function body for the pure virtual destructor.2
How many destructors are allowed in a class Mcq
How many Destructors are allowed in a Class? Explanation: A class in C++ allows only one destructor, which is called whenever the lifetime of an object ends.
What is an object Mcq
An object is instance of its class. It can be declared in the same way that a variable is declared, only thing is you have to use class name as the data type. See More Information.
How is destructor overloading done Mcq
How destructor overloading is done? Explanation: A class is allowed to have only one destructor. Therefore there is no point of destructor overloading. 15.
What is the role of destructors in classes
Destructors are usually used to deallocate memory and do other cleanup for a class object and its class members when the object is destroyed. A destructor is called for a class object when that object passes out of scope or is explicitly deleted.
How many virtual tables are created for base class and derived class Mcq
the answer remains the same 2 one for base and derived.
What does a class in C++ holds Mcq
1. What does a class in C++ holds? Explanation: The classes in C++ encapsulates(i.e. put together) all the data and functions related to them for manipulation.
Which of the following is true about constructor Mcq
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. 6.