A constructor is a particular member function of a class that is responsible for initialising the class's objects. When a class object is CREATED in C++, the constructor is automatically invoked. Constructors are typically defined in the public SECTION of a class. So, the question is whether CONSTRUCTION can be defined in the class's private section. The answer to this is a yes. A constructor can be defined in the class's private section.

The ways to use a constructor in the private section of the class:

• We can use the friend class if we don't want that class to be instantiated by anyone else except a friend class.
• If we need to create a singleton class, we can utilise the Singleton DESIGN pattern. This SIGNIFIES that the system is driven by a single item or a small number of objects, rather than multiple objects of the same class.
• Because constructors have the same name as classes, different constructors are distinguished by their argument lists; however, if there are many constructors, an implementation might become error-prone. The Named Constructor Idiom requires you to declare all of the class's constructors in the private or protected sections, and then build public static functions to retrieve the class's objects.