实验三

实验五

info.hpp

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

class info {
public:
    info(string ni0, string co0, string ci0, int n0) : nickname(ni0), contact{ co0 }, city{ ci0 }, n{ n0 } {}
    void print();
private:
    string nickname;
    string contact;
    string city;
    int n;
};
void info::print() {
    cout << "昵称：     " << nickname << endl;
    cout << "联系方式： " << contact << endl;
    cout << "所在城市： " << city << endl;
    cout << "预定人数： " << n << endl << endl;;
}

　　tesk5.cpp

#include"info.hpp"
#include<iostream>
#include<string>
#include<vector>
int main() {
    const int capacity = 100;
    vector<info> audience_info_list;
    cout << "录入信息：\n" << endl;
    cout << "昵称      " << "联系方式（邮箱/手机号）      "<< "所在城市      "<< "预定参加人数" << endl;
    string name, con, ci, chance = "u";
    int count = 0;
    int add = 0, sum;
    while (chance == "u" && cin >> name && add<capacity) {
        cin >> con >> ci >> count;
        sum = add;
        add = add + count;
        info in = info(name, con, ci, count);
        audience_info_list.push_back(in);
        if (add > capacity) {
            audience_info_list.pop_back();
            add = sum;
            cout << "对不起，只剩" << capacity - sum << "个位置." << endl;
            cout << "1.输入u，更新（update）预定信息\n2.输入q，退出预定.\n你的选择：";
            cin >> chance;
        }
    }
    cout << "截至目前，一共有" << add << "位听众预定参加。预定听众信息如下：" << endl;
    for (int i = 0; i < audience_info_list.size(); i++)
        audience_info_list.at(i).print();
}

 实验六

TestCoder.hpp

#include <iostream>
#include <string>
#include <cctype>
 
 using namespace std;
 class TextCoder {
 
 public:
     TextCoder(string str):text(str) {}
     string get_ciphertext();
     string get_deciphertext();
     
 private:
     string text;
     void encoder();
     void decoder();
     };
 void TextCoder::encoder() {
     for(auto &c: text) {
        if(c <= 'u' && c >= 'a' || c <= 'U' && c >= 'A') {
            c = c + 5;         } else if(c > 'u' && c <= 'z' || c > 'U' && c <= 'Z') {
             c = c - 21;
         }
     }
 }
 void TextCoder::decoder() {
     for(auto &c: text) {
         if(c <= 'z' && c >= 'f' || c <= 'Z' && c >= 'F') {
             c = c - 5;
        } else if(c >= 'a' && c < 'f' || c >= 'A' && c < 'F') {
            c = c + 21;
         }
     }
 }
 
 string TextCoder::get_ciphertext() {
     encoder();
     return text;
 }

 string TextCoder::get_deciphertext() {
     decoder();
    return text;
}

task6.cpp

#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(); 
        cout << "加密后英文文本:\t" << encoded_text << endl;

        decoded_text = TextCoder(encoded_text).get_deciphertext();
        cout << "解密后英文文本:\t" << decoded_text << endl;
        cout << "\n输入英文文本: ";
    }
}

int main() {  
    test(); 
}