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QuestionMessage sending in Lan C# win form Pin
123sudheer12313-Dec-12 19:19
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Richard MacCutchan13-Dec-12 22:37
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Sajeesh Payolam14-Dec-12 2:31
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vr99999999915-Dec-12 1:29
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QuestionGraphics Interface (game) Pin
April Fans13-Dec-12 18:37
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Richard MacCutchan13-Dec-12 22:40
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QuestionCompilation Problem Pin
BobInNJ13-Dec-12 14:15
MemberBobInNJ13-Dec-12 14:15 
C++
#include <iostream>
using namespace std;
template <class T> class Array {
  public:
    friend ostream& operator<< (ostream&, Array<T>&);

  private:
    T *pType;
};

template <class T>
ostream& operator<< (ostream& output, Array<T>& theArray)
{
   output << "output array" << endl;
   return output;
}
ostream& operator<< (ostream&, Array<int>&);
int main()
{
   Array<int> theArray;
   cout << theArray << endl;
   return 0;
}


I tried compiling the following code and I get a warning on line 5 that this statement declares a non-template function but despite this warning the code does compile. However, it does not link. The error message from the linker is:
/tmp/ccIbnsNk.o:t2.CFrown | :( text+0x9b): undefined reference to `operator<<(std::basic_ostream<char, std::char_traits<char=""> >&, Array<int>&)'

I feel the above code defines the function the linker says is undefined. What am I missing?

Bob
AnswerRe: Compilation Problem Pin
Graham Breach13-Dec-12 21:58
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BobInNJ14-Dec-12 11:16
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Graham Breach14-Dec-12 23:31
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Questionerror C2678: binary '=' Pin
alaaan7313-Dec-12 6:41
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Questionprocess Pin
messages13-Dec-12 3:45
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