实验任务5

task5.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_deciphertxet();
		cout << "解密后英文文本:\t" << decoded_text << endl; 
		cout << "\n输入英文文本: ";
	}
}
int main()
{
	test();
}

TextCoder.cpp

#include"TextCoder.hpp"
#include <ctype.h>
using namespace std;
TextCoder::TextCoder(const std::string& input_text) : text(input_text){}
void TextCoder::encoder()
{
	for (char& c : text)
	{
		if (isalpha(c))
		{
			if (islower(c))
			{
				c = 'a'+(c - 'a' + 7) % 26;

			}
			else {
				c = 'A'+(c - 'A' + 7) % 26;
			}
		}
	}
}
void TextCoder::decoder() {
	for (char& c : text) {
		if (isalpha(c)) 
		{
			if (islower(c)) {
				c = 'a' + (c - 'a' - 7 + 26) % 26;
			}
			else {
				c = 'A' + (c - 'A' - 7 + 26) % 26 ;
			}
		}
	}
}
string TextCoder::get_ciphertext() {
	encoder();
	return text;
}
string TextCoder::get_deciphertxet(){
	decoder();
	return text;
}

TextCoder.hpp

#ifndef TEXTCODER_HPP
#define TEXTCODER_HPP
#include <string>
using namespace std;
class TextCoder
{
private:
	string text;
	void encoder();
	void decoder();
public:
	TextCoder(const string& input_text);
	string get_ciphertext();
	string get_deciphertxet();
};
#endif

运行结果

实验任务6

info.hpp

#pragma once

#include <iostream>
#include <string>

using namespace std;

class Info {
private:
    string nickname;
    string contact;
    string city;
    int n;
public:
    Info(const string& nickname, const string& contact, const string& city, const int& n) : nickname{ nickname }, contact{ contact }, city{ city }, n{ n }
    {};
    void print() const
    {
        cout << "昵称：\t\t" << nickname << endl;
        cout << "联系方式：\t" << contact << endl;
        cout << "所在城市：\t" << city << endl;
        cout << "预定人数：\t" << n << endl;
    }
};

task6.cpp

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

using namespace std;

int main() {
    const int capacity = 100;

    int current_number = 0;
    string nickname, contact, city;
    int n;

    vector<Info> audience_info_list;
    vector<Info>& v = audience_info_list;

    cout << "录入信息：\n";
    cout << "昵称\t\t";
    cout << "联系方式(邮箱/手机号)\t\t";
    cout << "所在城市\t";
    cout << "预定人数" << endl;
    
    while (1)
    {
       cin >> nickname >> contact >> city >> n;
        if (current_number + n <= capacity)
        {
            Info in(nickname, contact, city, n);
            v.push_back(in);
            current_number += n;
        }
        else
        {
            cout << "对不起,只剩" << capacity - current_number << "个位置.\n";
            cout << "1.输入u，更新(updata)预定信息" << endl;
            cout << "2.输入q，退出预定" << endl;
            cout << "你的选择：";

            char c;
            cin >> c;
            if (c == 'q') break;
            else if (c == 'u') continue;
            else break;
        }
        if (current_number == capacity) break;
    }
    cout << endl;

    cout << "截至目前,一共有" << current_number<< "位听众预定参加.";
    if (current_number!= 0)
    {
        cout << "预定听众信息如下：" << endl;
        for (auto i = 0; i < v.size(); i++)
        {
            v[i].print();
            cout << endl;
        }
    }
}