实验4

任务5

Textcoder

#include<iostream>
#include<string>
using namespace std;
class Textcoder {
public:
    Textcoder(string t);
    string get_ciphertext();
    string get_deciphertext();
private:
    string  text;
    void encoder();
    void decoder();
};
Textcoder::Textcoder(string t) {
    text = t;
}
string Textcoder::get_ciphertext() {
    encoder();
    return text;
}
string Textcoder::get_deciphertext() {
    decoder();
    return text;
}
void Textcoder::encoder() {
    for (auto& t : text) {
        if (t >= 'a' && t <= 'z') {
            t = (t - 'a' + 7) % 26 + 'a';
        }
        if (t >= 'A' && t <= 'Z') {
            t = (t - 'A' + 7) % 26 + 'A';
        }

    }

}
void Textcoder::decoder() {
    for (auto& m : text) {
        if (m >= 'a' && m <= 'z') {
            m = 'z' - ('z' - m + 7) % 26;
        }
        if (m >= 'A' && m <= 'Z') {
            m = 'Z'- ('Z' - m + 7) % 26;
        }
    }
}

test

#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();  // 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).get_deciphertext(); // 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: ";
    }
}

int main() {
    test();
}

任务6

test

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

using namespace std;

int main(){
    const int capacity=100;
    vector<info> audience_info_list;
    string nickname, contact, city;     
    int n;
    vector<info> &i = audience_info_list;
    int sum=0;
    cout << "录入信息：\n\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(cin>>nickname >> contact >> city >> n){
        
        if(sum+n<=capacity){
            info a(nickname,contact,city,n);
            i.push_back(a);
            sum +=n;
        }
        else{cout << "对不起，只剩" << capacity - sum << "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 (sum == capacity) break;
   }
       cout << endl;

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

info

#include<iostream>

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

class info {
private:
    string nickname;
    string contact;
    string city;
    int n;
public:
    info(string n1, string c, string city1, int n2) {
        nickname = n1;
        contact = c;
        city = city1;
        n = n2;

    }
    void print() {
        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;
    }
};

test

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

using namespace std;

int main() {
    const int capacity = 100;
    vector<info> audience_info_list;
    string nickname, contact, city;
    int n;
    vector<info>& i = audience_info_list;
    int sum = 0;
    cout << "录入信息：\n\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 (cin >> nickname >> contact >> city >> n) {

        if (sum + n <= capacity) {
            info a(nickname, contact, city, n);
            i.push_back(a);
            sum += n;
        }
        else {
            cout << "对不起，只剩" << capacity - sum << "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 (sum == capacity) break;
    }
    cout << endl;

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