实验二 数组，指针与C++标准库

1.实验5

// 任务4 作业1.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//

#include <string>
#include <iostream>
#include <vector>

using namespace std;

class info {
private:
    string nickname, contact, city;
    int n;

public:
    info(string a, string b, string c,int d)
    {
        nickname = a;
        contact = b;
        city = c;
        n = d;
    }
    void print()
    {
        cout << "称呼:            " << nickname << endl;
        cout << "联系方式：       " << contact << endl;
        cout << "所在城市：       " << city << endl;
        cout << "预约人数：       " << n << endl;
    }

};

int main()
{
    vector<info> audience_info_list;
    string nickname, contact, city;
    char choice;
    int n;
    int count = 0;
    const int capacity = 100;
    cout << "录入信息：";
    cout << "\n\n";
    cout << "称呼/昵称： ，联系方式（邮箱/手机号）： ，所在城市： ，预约参加人数： " << endl;
    
    while (cin >> nickname)
    {
        cin >> contact;
        cin >> city;
        cin >> n;

        if (n + count > capacity)
        {
            cout << "对不起，只剩" << capacity - count << "个位置。" << endl;
            cout << "1.输入u，更新(update)预约信息" << endl;
            cout << "2.输入q，退出预约" << endl;
            cout << "你的选择：";
            cin >> choice;
            if (choice == 'q')
            {
                break;
            }
            else
            {
                cout << "请重新输入：" << endl;
                continue;
            }

        }
        count += n;
        audience_info_list.push_back(info(nickname, contact, city, n));
    }

    cout << "目前一共有" << count << "位听众预约参加，预约听众信息如下： " << endl;
    for (auto i = audience_info_list.begin(); i != audience_info_list.end(); i++)
    {
        i->print();
    }


}

 

 

 

 

实验6：

#ifndef TEXTCODER_HPP
#define TEXTCODER_HPP

#include <string>
#include <vector>
#include <iostream>

using namespace std;

class TextCoder
{
private:
    string text;

public:
    TextCoder(string txt)
    {
        text = txt;
    }
    string encoder();
    string decoder();
};

string TextCoder::encoder()
{
    for (auto& ch : text)
    {
        if (ch >= 'v' && ch <= 'z' || ch >= 'V' && ch <= 'Z')
        {
            ch = (char)(ch - 21);
        }
        if (ch >= 'a' && ch <= 'u' || ch >= 'A' && ch <= 'U')
        {
            ch = (char)(ch + 5);
        }
    }
    return text;
}

string TextCoder::decoder()
{
    for (auto& ch : text)
    {
        if (ch >= 'a' && ch <= 'e' || ch >= 'A' && ch <= 'E')
        {
            ch = (char)(ch + 21);
        }
        if (ch >= 'f' && ch <= 'z' || ch >= 'F' && ch <= 'Z')
        {
            ch = (char)(ch - 5);
        }
    }
    return text;
}


#endif 

#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))
    {
        encoded_text = TextCoder(text).encoder(); // 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).decoder(); // 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: ";
    }
}