14.4 HoldsPairWithMain.cpp

// template with default params: int & double
template <typename T1=int, typename T2=double>
class HoldsPair
{
private:
   T1 value1;
   T2 value2;
public:
   HoldsPair(const T1& val1, const T2& val2) // constructor
      : value1(val1), value2(val2) {}
 
   // Accessor functions
   const T1& GetFirstValue() const 
   {
      return value1;
   }

   const T2& GetSecondValue() const
   {
      return value2;
   }
};
   
#include <iostream>
using namespace std;

int main ()
{
   HoldsPair <> pairIntDbl (300, 10.09);
   HoldsPair <short, const char*> pairShortStr(25, "Learn templates, love C++");

   cout << "The first object contains -" << endl;
   cout << "Value 1: " << pairIntDbl.GetFirstValue() <<  endl;
   cout << "Value 2: " << pairIntDbl.GetSecondValue() << endl;

   cout << "The second object contains -" << endl; 
   cout << "Value 1: " << pairShortStr.GetFirstValue() <<  endl;
   cout << "Value 2: " << pairShortStr.GetSecondValue() << endl;

   return 0;
}