l6_v4

#include "stdafx.h"
#include <iostream>
#include <conio.h>
#include <vector>

using namespace std;

template <class T> class Sequence : public vector<T>
{
public:
    Sequence<T>(int N):vector<T>(N){}
    void fill();
    void print();
};

template<class T> void Sequence<T>::fill()
{
    for(unsigned int i=0;i<size();i++)
    {
        cout<<"a["<<i+1<<"]=";
        cin>>at(i);
    }
    cout<<endl;
};

template<class T> void Sequence<T>::print()
{
    T tmp;
    cout<<"Sequence: "<<endl;
    cout<<at(0)<<"  ";
    for(unsigned int i=0;i<size()-1;i++)
    {
        tmp=(pow(-1,(i+1)))*at(i)*at(i+1);
        cout<<tmp<<"  ";
    }
    cout<<endl;
};

void main()
{
    int size;
    cout<<"Input size=";
    cin>>size;

    cout<<endl<<"int:"<<endl;
    Sequence<int> intObj(size);
    intObj.fill();
    intObj.print();
    intObj.~Sequence();

    cout<<endl<<"double:"<<endl;
    Sequence<double> doubleObj(size);
    doubleObj.fill();
    doubleObj.print();
    doubleObj.~Sequence();

    cout<<endl<<"char:"<<endl;
    Sequence<char> charObj(size);
    charObj.fill();
    charObj.print();
    charObj.~Sequence();

    _getch();
}