What are destructors in C++? How to use destructors in C++?

 In C++, a destructor is a special member function that is called automatically when an object is destroyed. The purpose of a destructor is to perform any necessary cleanup or deallocation of resources that the object may have acquired during its lifetime.

The syntax for a destructor is similar to that of a constructor, but with a tilde (~) character in front of the class name. For example, here's how you might define a destructor for a class called MyClass:

c++
class MyClass {
public:
    // Constructor
    MyClass() {
        // Initialization code here
    }

    // Destructor
    ~MyClass() {
        // Cleanup code here
    }
};

When an object of type MyClass is destroyed, the destructor will be called automatically. This happens in a few different situations, including:

• When the object goes out of scope: If you create an object of type MyClass inside a function or block, the destructor will be called automatically when the function or block ends and the object goes out of scope.

• When the object is deleted: If you allocate an object of type MyClass dynamically using the new operator, you can delete it later using the delete operator. When you do so, the destructor will be called before the memory for the object is deallocated.

In general, it's a good idea to define a destructor for a class if the class manages any resources that need to be cleaned up when the object is destroyed. For example, if a class allocates memory using the new operator, it should deallocate that memory in its destructor to avoid memory leaks.