实验四-现代C++标准库与类模板-526互联

TextCoder.hpp

 1 #include <string>
 2 
 3 class TextCoder {
 4 private:
 5     std::string text;
 6 
 7     void encoder() {
 8         for (char& c : text) {
 9             if (c >= 'a' && c <= 'z') {
10                 c = ((c - 'a' + 7) % 26) + 'a';
11             } else if (c >= 'A' && c <= 'Z') {
12                 c = ((c - 'A' + 7) % 26) + 'A';
13             }
14         }
15     }
16 
17     void decoder() {
18         for (char& c : text) {
19             if (c >= 'a' && c <= 'z') {
20                 c = ((c - 'a' + 19) % 26) + 'a';
21             } else if (c >= 'A' && c <= 'Z') {
22                 c = ((c - 'A' + 19) % 26) + 'A';
23             }
24         }
25     }
26 
27 public:
28     TextCoder() = default;
29     TextCoder(const std::string& t) : text(t) {}
30 
31     std::string get_ciphertext() {
32         encoder();
33         return text;
34     }
35 
36     std::string get_deciphertext() {
37         decoder();
38         return text;
39     }
40 };

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task5.cpp

 1 #include "textcoder.hpp"
 2 #include <iostream>
 3 #include <string>
 4 
 5 void test() {
 6     using namespace std;
 7 
 8     string text, encoded_text, decoded_text;
 9 
10     cout << "输入英文文本: ";
11     while (getline(cin, text)) {
12         encoded_text = TextCoder(text).get_ciphertext();  
13         cout << "加密后英文文本:\t" << encoded_text << endl;
14 
15         decoded_text = TextCoder(encoded_text).get_deciphertext(); 
16         cout << "解密后英文文本:\t" << decoded_text << endl;
17         cout << "\n输入英文文本: ";
18     }
19 }
20 
21 int main() {  
22     test(); 
23 }

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Info.hpp

 1 #pragma once 
 2 
 3 #include<iostream>
 4 #include<string>
 5 #include <iomanip>
 6 
 7 using namespace std;
 8 class Info{
 9 public:
10     Info(string nickname0, string contact0, string city0, int n0);
11     ~Info()=default;
12 
13     void print() const;
14     
15 private:
16     string nickname,contact,city;
17     int n;
18 };
19 
20 Info::Info(string nickname0, string contact0, string city0, int n0)
21 {
22     nickname = nickname0;
23     contact = contact0;
24     city = city0;
25     n=n0;
26 }
27 
28 void Info::print() const
29 {
30     cout << "昵称:     " << nickname << endl;
31     cout << "联系方式:     " << contact << endl;
32     cout << "所在城市:     " << city << endl;
33     cout << "预定参加人数:     " << n << endl;
34 }

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task6.cpp

 1 #include<iostream>
 2 #include<string>
 3 #include<vector>
 4 #include "info.hpp"
 5 
 6 const int capacity = 100; 
 7 
 8 
 9 int main()
10 {
11     vector<Info> audience_info_list;
12     
13     cout << "录入信息：" << endl;
14     cout << endl;
15     cout << "昵称     联系方式(邮箱/手机号)     所在城市     预定参加人数     " << endl;
16     char choice;
17     int sum=0;
18     string name, contact, city;
19     int n;
20     while(cin >> name >> contact >> city >> n)
21     {
22         sum+=n;
23         
24         if(sum > capacity)
25         {
26             sum-=n;
27             cout << "对不起，只剩" << capacity-sum << "个位置" << endl;
28             cout << "1.输入u，更新（update）预定信息" << endl
29                  << "2.输入q, 退出预定" << endl
30                  <<"你的选择: ";
31             cin >> choice;
32             
33             if(choice=='u')
34             {
35                 cin >> name >> contact >> city >> n;
36                 Info a(name,contact,city,n);
37                 audience_info_list.push_back(a);
38                 sum+=n;
39             }
40             else 
41              break;
42         }
43         else audience_info_list.push_back(Info(name, contact, city, n));
44     }
45     cout << "截至目前，一共有" << sum << "位听众预定参加。预定听众信息如下：" << endl;
46     for(auto &Info:audience_info_list)
47     {
48         Info.print();
49     }
50 }

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