When copy constructor is automatically invoked in object oriented programming?

A copy constructor is automatically invoked in object-oriented programming when a new object is created as a copy of an existing object. This typically occurs in scenariOS such as passing an object by value to a function, returning an object from a function, or initializing a new object with another existing object. The copy constructor allows for the creation of a new instance that duplicates the state of the original object, ensuring that any dynamic resources are correctly managed.