// sample program ; ClassTemplate.cc  2004.8.22,2008.10.22 T. Kondo

#include <iostream>
using namespace std;

template <class T>
class Array{
	private:
	   T data[3];
	public:
           void setData(int n, T d);
	   T getData(int number);
};

template <class T> void Array<T>::setData(int number, T d)
{
	if(number <0 || number > 2)
	   cout <<"input number is outside the allowed region" << endl;
	else
	   data[number] = d;
}

template <class T> T Array<T>::getData(int number)
{
	if(number <0 || number > 2){
	   cout <<"input number is outside the allowed region" << endl;
		return data[0];
	}
	else
	   return data[number];
}

class Car{
	private:
	   int* pN;
	protected:
	   double gas;
	public:
	   int Npublic ;  // test public number
	   Car(double g=100.0);  //overloading with default argument 
	   ~Car();   // destructor
	   void setGas(double data){gas=data;}
	   // void showGas();
	   virtual void showGas();
};


int main()
{
	cout << "create integer array" << endl;
	Array<int> iArray;
	iArray.setData(0,123);	
	iArray.setData(1,243);	
	iArray.setData(2,524);
	for(int i=0; i<3; i++)
	   cout << iArray.getData(i) << endl;
	cout << "create double floating array" << endl;
	Array<double> dArray;
	dArray.setData(0,1.23);	
	dArray.setData(1,2.43);	
	dArray.setData(2,5.24);
	for(int i=0; i<3; i++)
	   cout << dArray.getData(i) << endl;
//-------Try Template with class Car---------------------------------------------
	Car mycar;            // define object "mycar" with constructor
	mycar.Npublic = 60;
	cout << "public number Car.Npublic =" << mycar.Npublic << endl;
	mycar.showGas();      // 
	mycar.setGas(99.2);   // set gas by 99.2
	mycar.showGas();
	Car mycar2(191.34);   // use overloading constructor
	mycar2.showGas();

	cout << "try Template"<< endl;
	Array<Car> CarArray;
	CarArray.setData(0,mycar);
	CarArray.getData(0).showGas();
	CarArray.setData(1,mycar2);
	CarArray.getData(1).showGas();

	return 0;
}	

Car::Car(double g)    // constructor with default argument
{
	gas=g; 
}  

Car::~Car()
{
	cout << " destructor"<< endl;
}

void Car::showGas()
{
	cout << "gas =" << gas << " (called from base class)" << endl;
}





------------------ClassTemplate.ccの実行結果は------------------------

create integer array
123
243
524
create double floating array
1.23
2.43
5.24
public number Car.Npublic =60
gas =100 (called from base class)
gas =99.2 (called from base class)
gas =191.34 (called from base class)
try Template
 destructor
gas =99.2 (called from base class)
 destructor
 destructor
gas =191.34 (called from base class)
 destructor
 destructor
 destructor
 destructor
 destructor
 destructor