Your class is named wrong. Your class is named cai
where all your functions belong to a class named number
: http://ideone.com/ZayX0c
One more thing.. you cannot have templates in the .cpp file. Template functions/defintions go in the header along with the class declaration. This is the reason for your undefined function error. Non-template functions go in the .cpp.
#include <cstdio>
#include <cstdlib>
template <class T>
class number {
public:
T x;
T y;
number (int a, int b){
x=a; y=b;}
int add (T&);
T greater ();
};
template <class T>
int number<T>::add (T& rezAdd){
rezAdd = x+y;
return 1;
}
template <class T>
T number<T>::greater (){
return x>y? x : y;
}
int main (int argc, char **argv) {
int aux;
number<int> c(3,5);
c.add(aux);
printf ("number added [%d]\n", c.add(aux));
printf ("greater number: [%d]\n", c.greater());
return 0;
}