Defining templated functions

Normally a function definition is just
     int  add(int  t1,  int  t2);
But if it's templated, the definition is
     template <typename T>
     T  add(T  t1,  T  t2)  {
             T  result  =  t1  +  t2;
             return  result;
     }
Because the function code is needed for instantiation later