实验二 数组、指针与C++标准库

//实验任务5
//info.hpp

#ifndef _INFO_HPP
#define _INFO_HPP

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

class Info {
    public:
        Info(string a, string b, string c, int d) :nickname(a), contact(b), city(c), n(d) {}
        void print();
    private:
        string nickname;
        string contact;
        string city;
        int n;
};
void Info::print()
{
    cout << "称呼：\t\t" << nickname << endl;
    cout << "联系方式：\t" << contact << endl;
    cout << "所在城市：\t" << city << endl;
    cout << "预订人数：\t" << n << endl;
}
#endif

//task5.cpp

#include"info.hpp"
#include<iostream>
#include<string>
#include<vector>



int main()
{    using namespace std;

    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;

    vector<Info>audience_info_list;
    const int Capacity = 100;
    int i = 0,j=0 , k;    char h;
    string e, f, g;  int m;  
    while ((cin >> e),(cin >> f),(cin >> g),(cin >> m))
    {
        audience_info_list.push_back(Info(e, f, g, m));

        k = Capacity - i - m;
        if (k < 0) {
            cout << "对不起，只剩" << Capacity - i << "个位置." << endl;
            cout << "1.输入u，更新(update)预订信息" << endl;
            cout << "2.输入q，退出预定" << endl;
            cout << "你的选择：";
            cin >> h;
            cout << "" << endl;

            if (h == ' u') {
                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;
                cin >> e >> f >> g >> m;
                Info update(e, f, g, m);
                
                audience_info_list.pop_back();

                continue;
            }
            if (h == 'q')break;

        }
        i = i + m;
        j++;
    }
    cout << "截至目前，一共有" << i << "位听众预定参加。预定听众信息如下：" << endl;
    for (int z = 0; z < j; z++) {
        audience_info_list[z].print();
    }
    return 0;
}

 

 

 

 

实验任务6

//TextCoder.hpp

#ifndef _TEXTCODER_HPP
#define _TEXTCODER_HPP

#include<iostream>


class TextCoder {
public:
    TextCoder(std::string a):text(a){} //A65 a97
    std::string encoder();
    std::string decoder();
private:
    std::string text;
};

std::string TextCoder::encoder()
{
    for (int i = 0; i < text.length(); i++) {
        if (text.at(i) >= 'a' && text.at(i) <= 'u' || 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) >= 'V' && text.at(i) <= 'Z')
            text.at(i) = text.at(i) + 5 - 26;
    }
    return text;
    
}
std::string TextCoder::decoder() {
    for (int i = 0; i < text.length(); i++) {
        if (text.at(i) >= 'f' && text.at(i) <= 'z' || text.at(i) >= 'F' && text.at(i) <= 'Z')
            text.at(i) -= 5;
        else if (text.at(i) >= 'a' && text.at(i) <= 'e' || text.at(i) >= 'A' && text.at(i) <= 'E')
            text.at(i) = text.at(i) + 26 - 5;
    }
    return text;
}
    


#endif

//task6.cpp

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

int main()
{
    using namespace std;

    string text, encoded_text, decode_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：" << encoded_text << endl;

        decode_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：" << decode_text << endl;
        cout << "\n输入英文文本：";
    }
}