overloaded operator for type conversion error

This is a discussion on overloaded operator for type conversion error within the C++ Programming forums, part of the General Programming Boards category; Here is what my operator looks like: Code: istring.hpp --------------- operator char*() const; Code: istring.cpp --------------- IString :: operator char*() ...

  1. #1
    Registered User
    Join Date
    Mar 2004
    Posts
    19

    overloaded operator for type conversion error

    Here is what my operator looks like:
    Code:
    istring.hpp
    ---------------
    
    operator char*() const;
    Code:
    istring.cpp
    ---------------
    
    IString :: operator char*() const
    {
        return ((string*)buffer)->data(); 
    }

    here string is the regular STL string. I get the following error when I try to compile this:

    "/h/IString/istring.cpp", line 71.39: 1540-0258 (S) A return value of type "char *" cannot be initialized with an expression of type "const char *".
    make: 1254-004 The error code from the last command is 1.

    Any ideas?

  2. #2
    Code Goddess Prelude's Avatar
    Join Date
    Sep 2001
    Posts
    9,796
    >Any ideas?
    The string type's data() member function returns a const qualified type. Instead of operator char *, why not use
    Code:
    operator const char*() const;
    My best code is written with the delete key.

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