C++程序设计实验二 数组、指针与C++标准库

 

Info.hpp文件源码

 

#include<iostream>
#include<string>
#include<iomanip>

using namespace std;

class Info {
public:
    Info(){ }
    Info(string name, string number, string w, int num) : nickname{ name }, contact{ number }, city{ w }, n{ num } { }

    void print() const
    {
        cout << left << setw(10) << "称呼:" << nickname << endl;
        cout << setw(10) << "联系方式:" << contact << endl;
        cout << setw(10) << "所在城市:" << city << endl;
        cout << setw(10) << "预定人数:" << n << endl;
    }

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

 

task5.cpp源码

 

#include"Info.hpp"
#include<iostream>
#include<vector>
#include<string>
#include<limits>

using namespace std;

static int num = 0;

int main()
{
    vector<Info> audience_info_list;
    string n_nickname, n_contact, n_city;
    int n = 0;
    const int capacity = 100;

    cout << "录入信息：\n" << 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 >> n_nickname)
    {
        cin >> n_contact >> n_city >> n;
        
        if (n + num <= capacity)
        {
            Info audience(n_nickname, n_contact, n_city, n);
            audience_info_list.push_back(audience);
            num += n;
        }
        else
        {
            char input;
            cout << "对不起，只剩" << capacity - num << "个位置。" << endl;
            cout << "1.输出u，更新（update）预定信息" << endl;
            cout << "2.输出q，退出预定" << endl;
            cout << "你的选择: ";
            cin >> input;
            if (input == 'q')
            {
                break;
            }
        }    
    }

    cout << "截至目前，一共有" << num << "位听众预定参加。预定听众信息如下:" << endl;

    for (auto item : audience_info_list)
        item.print();
}

 

运行测试结果截图

 

 

 

 

 

 

 

 

TextCoder.hpp文件源码

 

#include <iostream>
#include <string>

using namespace std;

class TextCoder 
{
public:
    TextCoder(string tex = NULL) : text{ tex } { }
    string encoder()
    {
        for (auto& item : text)
        {
            if (item >= 'a' && item <= 'z') 
                item = 'a' + (item - 'a' + 5) % 26;
            else if (item >= 'A' && item <= 'Z')
                item = 'A' + (item - 'A' + 5) % 26;
        }
        return text;
    }

    string decoder()
    {
        for (auto& item : text)
        {
            if (item >= 'a' && item <= 'z')
                item = 'a' + (item - 'a' + (26 - 5)) % 26;
            else if (item >= 'A' && item <= 'Z')
                item = 'A' + (item - 'A' + (26 - 5)) % 26;
        }
        return text;
    }

private:
    string text;
};

 

task6.cpp源码

 

#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: ";
    }
}

 

运行测试结果截图