Hello,
I just start to learn c++. what I'm using is visual c++ express edition.
here is the source code:
--------------------------------------start

#include <iostream>
using namespace std;
template <class T> 

class pair {
     T value1, value2;
public:
     pair (T first, T second) {

        value1=first;

        value2=second;

    }

    T getmax ();

};

template <class T> 
T pair::getmax (){

    T retval;

    retval = value1>value2? value1 : value2;

    return retval;

}

int main () {

    pair myobject(100,75);
    cout << myobject.getmax();

    return 0;

}

----------------------------------end
Here is the compiler message:

------------------------------------start

1>------ Build started: Project: classtemp, Configuration: Debug Win32 ------
1>Compiling...
1>classtemp.cpp
1>c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(49) : error C2872: 'pair' : ambiguous symbol
1>        could be 'c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(33) : pair'
1>        or       'c:\program files (x86)\microsoft visual studio 9.0\vc\include\utility(38) : std::pair'
1>c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(57) : error C2244: 'pair<T>::getmax' : unable to match function definition to an existing declaration
1>        c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(44) : see declaration of 'pair<T>::getmax'
1>        definition
1>        'T pair::getmax(void)'
1>        existing declarations
1>        'T pair<T>::getmax(void)'
1>c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(61) : error C2872: 'pair' : ambiguous symbol
1>        could be 'c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(33) : pair'
1>        or       'c:\program files (x86)\microsoft visual studio 9.0\vc\include\utility(38) : std::pair'
1>c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(61) : error C2514: 'pair' : class has no constructors
1>        c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(33) : see declaration of 'pair'
1>c:\users\hongxia\documents\visual studio 2008\projects\classtemp\classtemp\classtemp.cpp(62) : error C2662: 'pair<T>::getmax' : cannot convert 'this' pointer from 'pair' to 'pair<T> &'
1>        Reason: cannot convert from 'pair' to 'pair<T>'
1>        Conversion requires a second user-defined-conversion operator or constructor
1>Build log was saved at "file://c:\Users\Hongxia\Documents\Visual Studio 2008\Projects\classtemp\classtemp\Debug\BuildLog.htm"
1>classtemp - 5 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
----------------------------------------end

Cannot figure out what is wrong.

Edited 6 Years Ago by Nick Evan: Added code-tags

Change the getmax implementation as

template <class T>
T pair<T>::getmax (){

In main use

pair<int> myobject(100,75);

Also rename pair as pair1, as there is a naming conflict in std namespace. (else remove using and use std:: as required)

Edited 6 Years Ago by thomas_naveen: typo

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