Destructors in C++ are members functions in a class that delete an object . They are called when the class object goes out of scope such as when the function ends, the program ends, a delete variable is called etc.9 Eki 2018
Read moreWhat is destructor explain with syntax?
A destructor is a special member function that works just opposite to constructor , unlike constructors that are used for initializing an object, destructors destroy (or delete) the object. Syntax of Destructor ~class_name() { //Some code }
Read moreAre destructors always called?
yes, when you delete something, the destructor is called . 2. When the destructor of the linked list is called, it’s objects’ destructor is called.10 Nis 2012
Read moreWhen a destructor is called in C++ Mcq?
2. When a destructor is called? Explanation: The destructor is called just before the object go out of scope or just before its life ends . This is done to ensure that all the resources reserved for the object are used and at last, are made free for others.
Read moreWhy do we need pure virtual destructor in C++?
It is must to provide a function body for pure virtual destructor as derived class’s destructor is called first before the base class destructor, so if we do not provide a function body, it will find out nothing to be called during object destruction and error will occur.
Read moreWhat is virtual destructor in C++?
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 .
Read moreDoes C++ have virtual destructor?
Virtual destructors in C++ are used to avoid memory leaks especially when your class contains unmanaged code , i.e., contains pointers or object handles to files, databases or other external objects. A destructor can be virtual.29 Eki 2016
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