// template_class.cc
#include <iostream>
using namespace std;

template <typename T> 
class MyClass
{
  private:
    T Val;

  public:
    void SetVal(const T& x) { Val = x; }
    const T& GetVal() const { return(Val); }
    // function above is const function: does not change obj
    // returns const ref, meaning we can't change the value
    // even though GetVal() is giving us a ref
};

int main() 
{
  MyClass <int> I; // specify what type to use with <>
  I.SetVal(42);
  std::cout << "I holds value " << I.GetVal() << endl;
  MyClass <double> D; 
  D.SetVal(3.1415926);
  std::cout << "D holds value " << D.GetVal() << endl;
}