task 3

#pragma once
#include<iostream>
#include<string>
#include <iomanip>
using namespace std;

class Info {
public:
    Info() {}
    Info(string _nickname, string _contact, string _city, int _n) :nickname{ _nickname }, contact{ _contact }, city{ _city }, n{ _n } {}
    ~Info() {}
    void print();
    void set_nickname(string s1) { nickname = s1; }
    void set_contact(string s1) { contact = s1; }
    void set_city(string s1) { city = s1; }
    void set_n(int m) { n = m; }
private:
    string nickname;
    string contact;
    string city;
    int n;
};
void Info::print()
{
    cout << "昵称：" << "\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 << endl;
}

#include <iostream>
#include"info.h"
#include <string>
#include <vector>
#include <iomanip>
using namespace std;
int main()
{
    const int capacity = 100;
    string name, city, contact;
    string choice;
    int n, i = 0, flag = 1, m;
    int sum = 0;
    vector<Info>audience_info_list(100);
    cout << "录入信息：" << endl << endl;
    cout << "昵称" << "\t" << "联系方式：" << "\t" << "所在城市：" << "\t" << "预定参加人数：" << "\t" << endl;
    while (cin >> name >> contact >> city >> n)
    {
        if (n<=capacity -sum)
        {
            audience_info_list[i].set_nickname(name);
            audience_info_list[i].set_contact(contact);
            audience_info_list[i].set_city(city);
            audience_info_list[i].set_n(n);
            i++;
            sum += n;
        }
        else
        {
            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;
            cout << "2.输入q,退出预定" << endl;
            cout << "你的选择:";
            while (cin >> choice)
            {
                if (choice == "q")
                {
            
                    flag = 0;
                    break;
                }
                else if (choice == "u")
                {
                    cout << "昵称" << "\t" << "联系方式：" << "\t" << "所在城市：" << "\t" << "预定参加人数：" << "\t" << endl;
                    cin >> name >> contact >> city >> n;
                    if (n > capacity - sum)
                    {
                        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;
                        cout << "2.输入q,退出预定" << endl;
                        cout << "你的选择:";
                        continue;
                    }
                    else
                    {
                        audience_info_list[i].set_nickname(name);
                        audience_info_list[i].set_contact(contact);
                        audience_info_list[i].set_city(city);
                        audience_info_list[i].set_n(n);
                        i++;
                        sum += n;
                        break;
                    }
                }
            }
        }
        if (flag == 0)
            break;
    }
    m = i;
    for (i = 0; i <m; i++)
    {
        audience_info_list[i].print();
    }
    return 0;
}

 

 

 

 

 

 

#pragma once
#include<iostream>
#include<string>

using namespace std;
class  TextCoder
{
public:
    TextCoder(string test0):text{ test0 }{}
    string  get_ciphertext();
    string  get_deciphertext();
private:
    string text;
    void encoder();
    void decoder();
};
void  TextCoder::encoder()
{
    int num = text.length();
    for (int i = 0; i < num; i++)
    {
        if (text.at(i) >= 'a' && text.at(i) <= 'u')
            text.at(i) += 5;
        else if (text.at(i) >= 'v' && text.at(i) <= 'z')
            text.at(i) -= 21;
        else if (text.at(i) >= 'A' && text.at(i) <= 'U')
            text.at(i) += 5;
        else if (text.at(i) >= 'v' && text.at(i) <= 'Z')
            text.at(i) -= 21;
    }
}
void TextCoder::decoder()
{
    int num = text.length();
    for(int i=0;i<num;i++)
    {
        if (text.at(i) >= 'f' && text.at(i) <= 'z')
        {
            text.at(i) = text.at(i) - 5;
        }
        else if (text.at(i) >= 'a' && text.at(i) <= 'e')
        {
            text.at(i) = text.at(i) + 21;
        }
        else if (text.at(i) >= 'F' && text.at(i) <= 'Z')
        {
            text.at(i) = text.at(i) - 5;
        }
        else if (text.at(i) >= 'A' && text.at(i) <= 'E')
        {
            text.at(i) = text.at(i) + 21;
        }
    }
  }
string TextCoder::get_ciphertext()
{    
    encoder();
    return text;
}
string  TextCoder::get_deciphertext()
{
    decoder();
    return text;
}

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

void test() {
    using namespace std;

    string text, encoded_text, decoded_text;

    cout << "输入英文文本: ";
    while (getline(cin, text)) {
        encoded_text = TextCoder(text).get_ciphertext();  // 这里使用的是临时无名对象
        cout << "加密后英文文本:\t" << encoded_text << endl;

        decoded_text = TextCoder(encoded_text).get_deciphertext(); // 这里使用的是临时无名对象
        cout << "解密后英文文本:\t" << decoded_text << endl;
        cout << "\n输入英文文本: ";
    }
}

int main() {
    test();
}