Constructor calling another constructor

This is a discussion on Constructor calling another constructor within the C++ Programming forums, part of the General Programming Boards category; Hi, In my code I have the following constructors for my class Point: Code: Point(); Point(float x, float y, float ...

  1. #1
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    Constructor calling another constructor

    Hi,

    In my code I have the following constructors for my class Point:

    Code:
    Point();
    Point(float x, float y, float z);
    The first, instantiates a point at the origin, and the other instantiates a point at the (x, y, z) coordinates. I've got a method called move(float x, float y, float z) that translates the point to the given coordinates.

    I've tried doing this:

    Code:
    Point(float x, float y, float z)
    {
            Point();
            move(x, y, z);
    }
    But it didn't work. So, how can I do it? Is it possible for a contructor to call another constructor like this?

    Thanks.

  2. #2
    a_capitalist_story
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    Try:
    Code:
    Point(float x, float y, float z) : Point()
    {
            move(x, y, z);
    }

  3. #3
    Algorithm Dissector iMalc's Avatar
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    Quote Originally Posted by rags_to_riches View Post
    Try:
    Code:
    Point(float x, float y, float z) : Point()
    {
            move(x, y, z);
    }
    That doesn't work yet, but it will soon, once it gets accepted into the next revision of the C++ standard. For now you have to write a function which is called by both constructors (though then you're actually doing assignment instead of initialisation), or just duplicate the code.
    My homepage
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  4. #4
    a_capitalist_story
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    Well, I guess that shows how long it's been since I've been in Cplusplusland! Too long in Csharpistan rots the brain I suppose

  5. #5
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    ...just duplicate the code.
    Yeah, I believe that's the best solution available. Thanks.

    renanmzmendes

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