实验二 数组，指针与c++标准库

//Info.hpp
#ifndef EMPLOYEE_HPP
#define EMPLOYEE_HPP

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

class Info
{
private:
    string nickname;
    string contact;
    string city;
    int n;
public:
    Info(string name0, string contact0, string city0, int n0) 
    {
        nickname = name0;
        contact = contact0;
        city = city0;
        n = n0;
    }
    void print()
    {
        cout << "称呼：    \t" << nickname << endl;
        cout << "联系方式：\t" << contact << endl;
        cout << "所在城市：\t" << city << endl;
        cout << "预定参加人数：\t" << n << endl;
    }
};

#endif

//task5.cpp
#include"Info.hpp"
#include<iostream>
#include<vector>
#include<string>
using namespace std;


int main()
{
    vector<Info>audience_info_list;
    string nickname, contact, city;
    int n;
    int count = 0;//用于统计总人数
    int  const capacity = 100;//音乐会场总人数
    cout << "录入信息：" << endl;
    cout << 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 >> nickname >> contact >> city >> n)
    {
        count += n;
        if (count > capacity)
        {
            count -= n;
            cout << "对不起，只剩下" << capacity - count << "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;
            char choice;
            cout << "你的选择：" << endl;
            cin >> choice;
            if (choice == 'u')
                continue;
            else
                break;
        }
        Info v1(nickname, contact, city, n);
        audience_info_list.push_back(v1);
    }
    cout << endl;
    cout << "截至目前，一共" << count << "位听众预定参加。预定听众信息如下：" << endl;
    for (auto& i : audience_info_list)
        i.print();
}

 

 

 

//textcoder.hpp
#ifndef EMPLOYEE_HPP
#define EMPLOYEE_HPP
#include<iostream>
#include<string>
#include<vector>
using namespace std;

class TextCoder
{
private:
    string text;
public:
    TextCoder() {};
    TextCoder(string text0)
    {
        text = text0;
    }
    string encoder()
    {
        for (auto& c : text)
        {
            if ((c >= 'a' && c <= 'u')||(c>='A'&&c<='U'))
                c += 5;
            else if((c>'u'&&c<='z')||(c>'U'&&c<='Z'))
                c-=21;
        }
        return text;
    }
    string decoder()
    {
        for (auto& c : text)
        {
            if ((c >= 'f' && c <= 'z') || (c >= 'F' && c <= 'Z'))
                c -= 5;
            else if ((c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))
                c += 21;
        }
        return text;
    }
};

//task6.cpp
#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();//这里用的是临时无名对象
        cout << "加密后的英文文本：\t" << encoded_text << endl;

        decoded_text = TextCoder(encoded_text).decoder();//这里用的时临时无名对象
        cout << "解密后英文文本：\t" << decoded_text << endl;
        cout << "\n输入英文文本：";
    }
}