whats wrong with this function? where did i make mistake? [closed]

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I have this function declaration and its defination:

declaration

void laodFromFile(
      string const& fileName,
      Frames& frames,
      ostream&  log =std::clog);

defination:

void loadFromFile(
        string const&   fileName,
        Frames&         frames,
        ostream&        log =std::clog
        )
    {
        using std::endl;
        using std::ifstream;

        string const    streamDescription   =开发者_如何学Go "text data file " + fileName;

        log << "Opening " << streamDescription << " for reading..." << endl;

        ifstream    stream( fileName.c_str() );
        (!stream.fail())
            || throwX( S() << "Error opening " << streamDescription << "." );

        loadFrom( stream, frames, streamDescription, log );
    }

error:

Error   1   error LNK2019: unresolved external symbol "void __cdecl soundData::laodFromFile(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class soundData::Frames &,class std::basic_ostream<char,struct std::char_traits<char> > &)" (?laodFromFile@soundData@@YAXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@AAVFrames@1@AAV?$basic_ostream@DU?$char_traits@D@std@@@3@@Z) referenced in function "void __cdecl cppMain(int,char const * const * const)" (?cppMain@@YAXHQBQBD@Z) C:\lacture\loading frames\loading frames\main.obj   loading frames

what is wrong with that function? any one can guide me... Expecting a good response thanks

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It's a spelling mistake LoadFromFile and LaodFromFile...

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You've got laodFromFile somewhere, and loadFromFile somewhere else. Fix your typos.