A copy constructor has the same name as the class (let’s call it A) and has a parameter that
a) Is call-by value of an A object
b) Is call-by-reference of another class
c) Is call-by-reference of an A class object
d) Is call-by-name of an object named ~A.
e) None of these
c is the closest. It is preferable to have a const call-by-reference parameter
of class A type..
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