#include<iostream>
using namespace std;


template <typename T>
class  FUN
{
    T data1,data2;
 public:
     FUN (T,T);
     T GetData1 ( ) const;
     T GetData2 ( ) const;
};

template <typename T>
FUN<T>::FUN(T d1,T d2):data1(d1),data2(d2)
{}

template <typename T>
T  FUN<T>::GetData1( ) const
{
     return  data1;
}


template <typename T>
T  FUN<T>::Getdata2() const
{
     return  data2;
}
int main()
{
    FUN <double>(3.0,9.5);
    return 0;
}

Getdata2 应为
GetData2