Question

what is the need of copy construction?​

Answer 1

Answer:

The class needs to be able to specify exactly how the copy should be created. Thus, C++ uses a copy constructor in the preceding example to create a copy of the object ms on the stack during the call of function fn()

Answer 2

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A copy constructor in a Java class is a constructor that creates an object using another object of the same Java class. That's helpful when we want to copy a complex object that has several fields, or when we want to make a deep copy of an existing object