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GeekInterview.com > Interview Questions > Programming > C++
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Question: Define copy constructor? What is the use of copy constructor?
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| June 06, 2006 11:12:42 |
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| vss |
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RE: Define copy constructor? What is the use of copy c...
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| A copy constructor is used to initialize a newly declared variable from an existing variableA variable is declared which is initialized from another object,A value parameter is initialized from its corresponding argument.f(p); // copy constructor initializes formal value parameter. An object is returned by a function.C++ calls a copy constructor to make a copy of an object in each of the above cases. If there is no copy constructor defined for the class, C++ uses the default copy constructor which copies each field, ie, makes a shallow copy. |
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