实验3

task5.cpp

#include<iostream>
#include<string>
#include<vector>
#include"info.hpp"
using namespace std;
int main() {
    const int capacity = 100;
    vector<info> audience_info_list;
    string name, cont, city;
    int rn,count=0;
    string s = "昵称       联系方式(邮箱/手机号)     所在城市     预定参加人数";
    cout << "录入信息：" << endl << endl;
    cout << s << endl;
    while (cin>>name) {
        cin >> cont >> city >> rn;
        info inf(name,cont,city,rn);
        audience_info_list.push_back(inf);
        count += inf.get_n();
        if (count > capacity) {
            audience_info_list.pop_back();
            count -= inf.get_n();
            cout << "对不起，只剩" << 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;
            cout << "你的选择：";
            string choice;
            cin >> choice;
            if (choice == "u") continue;
            else break;
        }
    }
    cout << "截至目前，一共有" << count << "位听众预定参加。预定听众信息如下：" << endl;
    for (auto i = 0; i < audience_info_list.size(); i++) {
        audience_info_list[i].print();
        cout << endl;
    }

}

info.hpp

#pragma once
#include<iostream>
#include<string>
using namespace std;
class info {
public:
    info(string name, string cont, string ct, int rn) :nickname(name), contact(cont), city(ct), n(rn) {}
    void print()const ;
    int get_n() { return n; }

private:
    string nickname, contact, city;
    int n;
};
void info::print()const {
    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;
}

 

 

 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();
}

textcoder.hpp

#pragma once
#include<iostream>
using namespace std;
class TextCoder {
public:
    TextCoder(string t):text(t){}
    string get_ciphertext();
    string get_deciphertext();
private:
    string text;
    void encoder();
    void decoder();
};
string TextCoder:: get_ciphertext() {
    encoder();
    return text;
}
string TextCoder:: get_deciphertext() {
    decoder();
    return text;
}
void TextCoder::encoder() {
    for (auto i = 0; i < text.length(); i++) {
        if (text[i] <= 'z' && text[i] >= 'a' || text[i] <= 'Z' && text[i] >= 'A') {
            text[i] += 5;
            if (!text[i] <= 'z' && !text[i] >= 'a' || !text[i] <= 'Z' && !text[i] >= 'A')
                text[i] -= 26;
        }
    }
}
void TextCoder::decoder() {
    for (auto i = 0; i < text.length(); i++) {
        if (text[i] <= 'z' && text[i] >= 'a' || text[i] <= 'Z' && text[i] >= 'A') {
            text[i] -= 5;
            if (!text[i] <= 'z' && !text[i] >= 'a' || !text[i] <= 'Z' && !text[i] >= 'A')
                text[i] += 26;
        }
    }
}