/*
Question #1

Write a class template named Triad that has 3 private data members with
independent type template parameters. The class should have a constructor,
access functions, and a print() member function that is defined outside the
class.

The following program should compile and run:
*/

#include <iostream>
#include <string>

template <typename T1, typename T2, typename T3>
class Triad {
 private:
  T1 t1;
  T2 t2;
  T3 t3;

 public:
  explicit Triad() {
  }
  explicit Triad(T1 t1, T2 t2, T3 t3) : t1(t1), t2(t2), t3(t3) {
  }
  T1 first() { return t1; }
  void print() ;
  ~Triad() {
  }
};

template <typename T1, typename T2, typename T3>
void Triad<T1, T2, T3>::print() {
  std::cout << '[' << t1 << ", " << t2 << ", " << t3 << "]\n";
}

int main() {
  Triad t1{1, 2, 3};
  t1.print();
  std::cout << '\n';
  std::cout << t1.first() << '\n';

  using namespace std::literals::string_literals;
  const Triad t2{1, 2.3, "Hello"s};
  t2.print();
  std::cout << '\n';

  return 0;
}