Constructor is a special member function that is used to initialize the data members of an object.
The rules for writing a constructor function are:
- They should be declared in the public section
- They are invoked automatically when the objects are created
- They should not have return types, therefore they cannot return values
- They cannot be inherited
- They can have default arguments
- These cannot be static
An object of a class with a constructor cannot be used as a member of a union.
