CoolInterview.com - World's Largest Collection of Interview Questions & Answers, FAQs, queries, sample papers, exam papers, dumps, what, why, how, where, when questions
Interview Success Kit - 9,000 Interview Que. & Ans.
Covers 9,000+ Interview Questions asked in actual MNC Interviews - all with model answers.
Get Your Dream Job Now - www.vyoms.com
Sponsored Links
Interview Questions
Our Services

INTERVIEW QUESTIONS C++ OBJECT ORIENTED PROGRAMMING IN C++ DETAILS
Question :
what are the disadvantages of copy constructor??
Contact Contact
Category Object Oriented Programming in C++ Interview Questions
Rating (3.7) By 84 users
Added on 8/16/2012 10:35:31 AM
Views 5769
Rate it!
Answers:

Well if we are talking about the default copy constructor, then the disadvantage it suffers from is that i does a shallow copy of the class object.<br>Which means that if the class has some dynamic memory allocated or file pointers, the copied object will also point to the same memory location or files. That is the memory or file is not copied.



Posted by: Samit Sasan

Contact Samit Sasan Contact Samit Sasan

If the programer is defining the copy constructor, the compiler will invoke the copy constructor at the time of copying the members of the calling object to the members of the called objects. This will cretaes the problems if the object contains the pointer variables. The time copying is more if there are more number of object memebrs



Posted by: mahendra

Contact mahendra Contact mahendra

A copy constructor is called when a new variable is created from an object. The default copy constructor does a shallow copy i.e; the copied object points to same old memory pointed by the parent object. If the object has some dynamic memory or pointers, it is better to create a copy constructor.<br><br>When a new copy constructor is written, assignment operator and destructor also should be written in the class.<br>



Posted by: suresh

Contact suresh Contact suresh

If you have the better answer, then send it to us. We will display your answer after the approval.
Rules to Post Answers in CoolInterview.com:-

  • There should not be any Spelling Mistakes.
  • There should not be any Gramatical Errors.
  • Answers must not contain any bad words.
  • Answers should not be the repeat of same answer, already approved.
  • Answer should be complete in itself.
  • Name :*
    Email Id :*
    Answer :*
    Verification Code Code Image - Please contact webmaster if you have problems seeing this image code Not readable? Load New Code
    Process Verification Enter the above shown code: *
    Inform me about updated answers to this question

    Related Questions
    View Answer
    Can the structures contain the constructor?
    If yes, then how?
    View Answer
    What is an object?


    View Answer
    What will happen if I say delete this


    View Answer
    What are the different types of polymorphism?



    View Answer
    How can we define a dynamic memory allocation in UNIX operating system?

    View Answer
    What is abstraction?
    View Answer
    What do you mean by binding of data and functions?
    View Answer

    Please Note: We keep on updating better answers to this site. In case you are looking for Jobs, Pls Click Here Vyoms.com - Best Freshers & Experienced Jobs Website.

    View ALL Object Oriented Programming in C++ Interview Questions & Answers

    User Options
    Latest 20 Questions
    What are monomorphic and polymorphic classes?
    Why is Standard Template Library used?
    How should runtime errors be handled in C++?
    What do you mean by internal linking and external linking in c++?
    What is implicit conversion/coercion in c++?
    What is difference between shallow copy and deep copy? Which is default?
    What is virtual destructors? Why they are used?
    What do you mean by C++ access specifiers ?
    What are the advantages of operator overloading?
    What are the advantages of using cin and cout compared to scanf(...) and printf(...), respectively?
    What are static members and static functions?
    What are storage qualifiers in C++ ?
    What is the use of default constructor?
    What are tokens in C++?
    Define destuctors ?
    What is the difference between a template class and class template?
    What are the differences between new and malloc ?
    What is difference between template and macro ?
    What do you mean by early binding?
    How can we access protected and private members of a class?


    Copyright ©2003-2016 CoolInterview.com, All Rights Reserved.
    Privacy Policy | Terms and Conditions

    Download Yahoo Messenger | Placement Papers| FREE SMS | ASP .Net Tutorial | Web Hosting | Dedicated Servers | C Interview Questions & Answers

    Testing Articles | Testing Books | Testing Certifications | Testing FAQs | Testing Downloads | Testing Interview Questions | Testing Jobs | Testing Training Institutes


    Cache = 0 Seconds