basic_iostream parameters

This is a discussion on basic_iostream parameters within the C++ Programming forums, part of the General Programming Boards category; Hello, I am learning about streams, and there are a few things that aren't clear to me. First, the definition ...

  1. #1
    DL1
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    basic_iostream parameters

    Hello,

    I am learning about streams, and there are a few things that aren't clear to me.

    First, the definition of basic_ostream:

    Code:
    template<class charT, class traits = char_traits<charT> >
    class basic_ostream 
    :virtual public basic_ios<charT, traits>{/* ...*/};
    What does the parameter charT actually mean? What value can it take other than char and, perhaps, wchar_t?

    Are charT and traits implementation-dependent (or device-dependent?) and fixed for a given system, or can they be changed? I tried outputting to wcout (which I thought was declared in <iostream>), just to see what would happen. My compiler didn't recognise it.

    Any help would be greatly appreciated.

  2. #2
    The larch
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    I think MinGW doesn't provide wide characters streams if that's what you are using. You may need to install another standard library implementation (STLPort) then it should work.
    I might be wrong.

    Thank you, anon. You sure know how to recognize different types of trees from quite a long way away.
    Quoted more than 1000 times (I hope).

  3. #3
    DL1
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    It is what I'm using. But I don't actually need to use wide stream characters - I was just fiddling around trying to see what a stream character is and what it would mean to change its type.

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