sending in char pointer, using string

This is a discussion on sending in char pointer, using string within the C++ Programming forums, part of the General Programming Boards category; Hi, If anyone can help it would be greatly appreciated. I have a function which creates a StrBuf called _buf. ...

  1. #1
    Registered User
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    Sep 2002
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    7

    sending in char pointer, using string

    Hi,

    If anyone can help it would be greatly appreciated. I have a function which creates a StrBuf called _buf. Now I want to send this _buf into another member function which only accepts char *pointer ie. character pointer. Here is the member function:

    Code:
      
    
    void Token::setStr(const char* str)
    {_str = (char*)str;}
    Note: _str is a private variable.


    What must I do to _buf so that I can send it as a parameter for the setStr function.

    Can I do something like:

    char *temp[] = _buf;
    char *temppointer = temp;
    then send in tempointer to the setStr funtion? ie. Object.setStr(&temppointer)

    Thanks if anyone can offer some guidance and assistance.

  2. #2
    Code Goddess Prelude's Avatar
    Join Date
    Sep 2001
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    9,796
    >I have a function which creates a StrBuf called _buf.
    Is StrBuf a class you've created? Or are you talking about a wierd typedef of the standard stringbuf? If it's the former then just create a conversion to const char * through either an overloaded implicit conversion (not usually a good idea) or an explicit member function (preferred).

    >_str = (char*)str;
    If you want to cast away const, use the C++ casts so that readers know exactly what you're doing:

    _str = const_cast<char *> ( str );

    >What must I do to _buf so that I can send it as a parameter for the setStr function.
    We need to know a little more about _buf to guide you properly, I don't know of any standard type called StrBuf, so I have to assume that you've written it.

    -Prelude
    My best code is written with the delete key.

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