vector of classes

This is a discussion on vector of classes within the C++ Programming forums, part of the General Programming Boards category; Am getting an error message while trying to create a vector of class objects. Code: std::vector<cannon> cballs; cballs.insert(cballs.begin(), new cannon(5*ballNo,90,5)); ...

  1. #1
    Registered User
    Join Date
    Jul 2008
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    vector of classes

    Am getting an error message while trying to create a vector of class objects.

    Code:
    	std::vector<cannon> cballs;
    	cballs.insert(cballs.begin(), new cannon(5*ballNo,90,5));
    error C2664: 'class cannon *__thiscall std::vector<class cannon,class std::allocator<class cannon> >::insert(class cannon *,const class cannon &)' : cannot convert parameter 2 from 'class canno
    n *' to 'const class cannon &'
    Reason: cannot convert from 'class cannon *' to 'const class cannon'
    No constructor could take the source type, or constructor overload resolution was ambiguous

  2. #2

    Join Date
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    USA
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    From the looks of that error message, it seems you don't need the word 'new'.

  3. #3
    and the hat of sweating
    Join Date
    Aug 2007
    Location
    Toronto, ON
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    3,545
    Yes, it's the new that's wrong.
    Code:
    std::vector<cannon> cballs;
    You have a vector of cannon objects, but you're using new which is trying to insert cannon* pointers.

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