Compiler Issues (Works on older not newer)

This is a discussion on Compiler Issues (Works on older not newer) within the C++ Programming forums, part of the General Programming Boards category; Hola Amigos: Comin atcha for another semester! They upgraded the compilers on the systems at school and now my redhat ...

  1. #1
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    Compiler Issues (Works on older not newer)

    Hola Amigos:

    Comin atcha for another semester! They upgraded the compilers on the systems at school and now my redhat 7.1 seems to be out of date! it compiles fine on mine, but when brought over to the school's systems i get this message:

    'string' is used as a type, but is not defined as a type


    for every string declaration in all of my structs...

    is there some special casting i have to do? i'm mental right now so i'll let it sit overnight

    thanks
    SS3X

  2. #2
    geek SilentStrike's Avatar
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    It's because you are using a string from <string> but haven't declared it as a std::string, or put a using std::string or a using namespace std; in the scope of the string declaration.

    IE,

    illegal but older versions of gcc will compile

    Code:
    #include <string>
    
    int main() {
        string a;
        return 0;
    }
    Legal, how it should be done.

    Code:
    #include <string>
    
    int main() {
        std::string a;
        return 0;
    }
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
    Read my livejournal

  3. #3
    Just because ygfperson's Avatar
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    really? i had gcc 3.2 and it compiled your illegal example fine. but your point is still valid.

  4. #4
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    hey man you rock!

    i never new about that std:: prefix, i just used the old gcc..

    glad you were around to help me along the way

    much appreciated
    SS3X

  5. #5
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    how do i find out the version of gcc i have and my univ has? is there any command out there for that?
    SS3X

  6. #6
    ATH0 quzah's Avatar
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    Type "which gcc" in your console window and hit enter.
    Alternately, just type "gcc" by itself, or your can likely use "gcc --help" or "gcc /?".

    Quzah.
    Hope is the first step on the road to disappointment.

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