using namespace std;
const int FIRST_TIME = 1;
template <typename T>
void func (T & )
{
 static int var;
 ++var;
 if (FIRST_TIME == var)
  cout << "Printed once." << endl;
  else
   cout << "Printed more than once." << endl;
}
int main(void)
{
 int a1[4];
 int a2[5];
 func (a1);
 func (a2);
}