#include<iostream>
#include<string>
using namespace std;
class info {
public:
    info(string name, string con, string cs, int m) :nickname(name),contact(con),city(cs),n(m) {}
    void print() {
        cout << "称呼:             " << nickname << endl;
        cout << "联系方式:         " << contact << endl;
        cout << "所在城市:         "<<city << endl;
        cout << "预定人数:         " << n << endl;
    };
private:
    string nickname;
    string contact;
    string city;
    int n;
};

#include"info.hpp"
#include<iostream>
#include<string>
#include<vector>
void main() {
    using namespace std;
    vector<info>audience_info_list;
    const int capacity=100;
    int sum = 0;
    int i = 0;
    string str1,str2,str3;
    char choice;
    int n4;
    cout << "录入信息:" << endl << endl;
    cout << "称呼/昵称  联系方式(邮箱/手机号)  所在城市     预定参加人数" << endl;
    while (cin>>str1) {
        if (str1 == "^Z") break;
        else{
            cin >> str2 >> str3 >> n4;
            i++;
            audience_info_list.push_back(info(str1, str2, str3, n4));
            sum += n4;
            if (sum > capacity) {
                sum -= n4;
                cout << "对不起，只剩" << capacity-sum << "个位置." << endl;
                cout << "1.输入u，更新(update)预定信息" << endl << "2.输入q，退出预定" << endl << "你的选择：";
                cin >> choice;
                break;
            }
        }
    }
    cout << endl << endl;
    cout << "截至目前，一共有" << sum << "位听众预定参加。预定听众信息如下："<<endl;
    for (int j = 0;j < i;j++) {
        audience_info_list[j].print();
    }
}

#include<iostream>
#include<string>
using namespace std;
class TextCoder {
public:
    TextCoder(string a) :text(a) {}
    string encoder() {
        string str="";
        for (auto e : text) {
            if (e >= 'a' && e <= 'u' || e >= 'A' && e <= 'U') {
                e += 5;str += e;
            }
            else if (e >= 'v' && e <= 'z' || e >= 'V' && e <= 'Z') {
                e -= 21;str += e;
            }
            else str += e;
        }
        return str;
    };
    string decoder() {
        string str = "";
        for (auto e : text) {
            if (e >= 'f' && e <= 'z' || e >= 'F' && e <= 'Z') {
                e -= 5;str += e;
            }
            else if (e >= 'a' && e <= 'e' || e >= 'A' && e <= 'E') {
                e += 21;str += e;
            }
            else str += e;
        }
        return str;
    };
private:
    string text;
};

#include "textcoder.hpp"
#include <iostream>
#include <string>

int main()
{
    using namespace std;
    string text, encoded_text, decoded_text;
    cout << "输入英文文本: ";
    while (getline(cin, text))
    {
        if (text != "^Z") {
            encoded_text = TextCoder(text).encoder();
            cout << "加密后英文文本:t" << encoded_text << endl;
            decoded_text = TextCoder(encoded_text).decoder();
            cout << "解密后英文文本:t" << decoded_text << endl;
            cout << "n输入英文文本: ";
        }
    }
}