//info.h
#ifndef INFO_H

#define INFO_H

#include <string>

using std::string;

class Info {

    public:

        Info(string nickname0, string contact0, string city0, int n);

        void print();

    private:

        string nickname;    // 称呼/昵称

        string contact;        // 联系方式，可以是email，也可以是手机号

        string city;        // 所在城市

        int n;                // 预定到场人数

};

#endif 

//info.cpp
#include "info.h"

#include <iostream>

using std::cout;

using std::cin;

using std::endl;

Info::Info(string nickname0, string contact0, string city0, int n0): nickname(nickname0), contact(contact0), city(city0), n(n0){

}

void Info::print() {

    cout << "称呼:\t\t" << nickname << endl;

    cout << "联系方式:\t" << contact << endl;

    cout << "所在城市:\t" << city << endl;

    cout << "预定人数:\t" << n << endl;

 }

//main.cpp
#include "info.h"

#include <iostream>

#include<vector>

using namespace std;

int main()

{

    vector<Info>audienceInfoList;

    string audiencenickname,audiencecontact,audiencecity;

    int audiencen;

    while(cin>> audiencenickname>>audiencecontact>>audiencecity>>audiencen)

    {

        Info audience(audiencenickname,audiencecontact,audiencecity,audiencen);

        audienceInfoList.push_back(audience);

    }

    for (int i=;i<audienceInfoList.size();i++)

         audienceInfoList[i].print();

    system("pause");

    return ;

}