实验三

实验任务5

#pragma once

#include<iostream>
#include<string>
using namespace std;

class Info {
public:
    Info(string nickname1, string contact1, string city1, int n1) : nickname(nickname1), contact(contact1), city(city1), n(n1) {

    }

    void print() {
        cout << "昵称：       " << nickname << endl;
        cout << "联系方式：   " << contact << endl;
        cout << "所在城市：   " << city << endl;
        cout << "预订人数：   " << n << endl;
    }

private:
    string nickname;
    string contact;
    string city;
    int n;
};

#include"Info.hpp"
#include<iostream>
#include<string>
#include<vector>
using namespace std;

int main() {
    const int capacity = 100;
    vector<Info> audience_info_list;
    int count = 0;
    string nickname;
    string contact;
    string city;
    int n;
    char choice;
    cout << "录入信息:" << endl << endl;
    cout << "昵称     "  << "联系方式（邮箱/手机号）     "  << "所在城市     " << "预定参加人数    " << endl;
    while (cin>>nickname){
        cin >> contact >> city >> n;
        if (count + n > capacity) {
            cout << "对不起,只剩" << capacity - count << "个位置。" << endl;
            cout << "1.输入u,更新(update)预订信息" << endl;
            cout << "2.输入q，退出预订" << endl;
            cout << "你的选择 ：";
            cin >> choice;
            if (choice == 'q')
                break;
            else if (choice == 'u')
                continue;
        }
        Info info(nickname, contact, city, n);
        audience_info_list.push_back(info);
        count += n;
    }
    cout << "截至目前，一共有" << count << "位听众预订参加，预定听众信息如下：" << endl;
    for (int i = 0; i < audience_info_list.size(); i++) {
        audience_info_list[i].print();
        cout << endl;
    }
}

实验任务6

#pragma once

#include<iostream>
#include<string>
using namespace std;

class TextCoder {
public:
    TextCoder(string text1) : text(text1) {
    }
    string get_ciphertext() {
        return encoder();
    }
    string get_deciphertext() {
        return decoder();
    }

private:
    string text;

private:
    string encoder() {
        for (int i = 0; i < text.length(); i++) {
            if (text[i] >= 'a' && text[i] <= 'u')
                text[i] += 5;
            else if (text[i] >= 'v' && text[i] <= 'z')
                text[i] -= 21;
            else if (text[i] >= 'A' && text[i] <= 'U')
                text[i] += 5;
            else if (text[i] >= 'V' && text[i] <= 'Z')
                text[i] -= 21;
            else
                continue;
        }
        return text;
    }

    string decoder() {
        for (int i = 0; i < text.length(); i++) {
            if (text[i] >= 'f' && text[i] <= 'z')
                text[i] -= 5;
            else if (text[i] >= 'a' && text[i] <= 'e')
                text[i] += 21;
            else if (text[i] >= 'F' && text[i] <= 'Z')
                text[i] -= 5;
            else if (text[i] >= 'A' && text[i] <= 'E')
                text[i] += 21;
            else
                continue;
        }
        return text;
    }

};

#include "textcoder.hpp"
#include <iostream>
#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();
}