Describe the role of constructors and destructors in C++ classes.
Describe the role of constructors and destructors in C++ classes.
473
04-Aug-2023
Updated on 06-Aug-2023
Aryan Kumar
06-Aug-2023In C++, constructors and destructors are special member functions that are called when an object of a class is created or destroyed.
Constructors and destructors are always called automatically, even if the object is created or destroyed using a pointer.
Here is an example of a constructor and destructor for a class called
Car:C++
The
Carconstructor is called when aCarobject is created. TheCardestructor is called when aCarobject is destroyed.Constructors and destructors can be overloaded, just like any other member function. This can be useful for initializing or cleaning up objects in different ways depending on how they are created or destroyed.
For example, the following code shows an overloaded constructor for the
Carclass that takes the car's make and model as arguments:C++
This constructor can be used to create a
Carobject with a specific make and model.Destructors cannot be overloaded. This is because there is only one way to destroy an object.
Constructors and destructors are an important part of object-oriented programming in C++. They are used to ensure that objects are properly initialized and cleaned up.