526互联

实验四 现代c++ 标准库与类的模板

发布时间 2023-12-01 02:56:12作者: 方艺博

任务5

#include <iostream>

#include <string>


class TextCoder {
private:
    std::string text;

    void encoder() {
        for (char &c : text) {
            if (isalpha(c)) { 
                char base = isupper(c) ? 'A' : 'a'; 
                c = base + ((c - base + 7) % 26); 
            }
        }
    }

    void decoder() {
        for (char &c : text) {
            if (isalpha(c)) { 
                char base = isupper(c) ? 'A' : 'a'; 
                c = base + ((c - base - 7 + 26) % 26); 
            }
        }
    }

public:
    TextCoder(const std::string& inputtext): text(inputtext) {}

    std::string get_ciphertext() {
        encoder();
        return text;
    }

    std::string get_deciphertext() {
        decoder();
        return text;
    }
};
 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();  // 这里使用的是临时无名对象
13         cout << "加密后英文文本:\t" << encoded_text << endl;
14 
15         decoded_text = Textcoder(encoded_text).get_deciphertext(); // 这里使用的是临时无名对象
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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任务6

 1 #include<iostream>
 2 #include<string>
 3 #include<vector>
 4 using namespace std;
 5 
 6 class info{
 7 private:
 8     string nickname;
 9     string contact;
10     string city;
11     int n;
12 public:
13     info(string n1,string c,string city1,int n2){
14         nickname=n1;
15         contact=c;
16         city=city1;
17         n=n2;
18         
19     }
20     void print(){
21     cout<<"昵称：\t\t"<<nickname<<endl;
22     cout<<"联系方式：\t"<<contact<<endl;
23     cout<<"所在城市：\t"<<city<<endl;
24     cout<<"预定人数：\t"<<n<<endl;
25     }
26 };
View Code
 1 #include <iostream>
 2 #include <string>
 3 #include <vector>
 4 #include "info.hpp"
 5 
 6 using namespace std;
 7 
 8 int main() {
 9     const int capacity = 100;
10 
11     int reserved = 0;
12     string nickname, contact, city;
13     int n;
14 
15     vector<Info> audience_info_list;
16     vector<Info> &v = audience_info_list;
17 
18     cout << "录入信息：\n";
19     cout << "昵称\t\t";
20     cout << "联系方式(邮箱/手机号)\t\t";
21     cout << "所在城市\t";
22     cout << "预定人数" << endl;
23 
24     while(cin >> nickname >> contact >> city >> n)
25     {
26         if(reserved + n <= capacity)
27         {
28             Info in(nickname, contact, city, n);
29             v.push_back(in);
30             reserved += n;
31         }
32         else
33         {
34             cout << "对不起,只剩" << capacity - reserved << "个位置.\n";
35             cout << "1.输入u，更新(updata)预定信息" << endl;
36             cout << "2.输入q，退出预定" << endl;
37             cout << "你的选择：";
38 
39             char c;
40             cin >> c;
41             if(c == 'q') break;
42             else if(c == 'u') continue;
43             else break;
44         }
45         if (reserved == capacity) break;
46     }
47     cout << endl;
48 
49     cout << "截至目前,一共有" << reserved << "位听众预定参加.";
50     if(reserved != 0)
51     {
52         cout << "预定听众信息如下：" << endl;
53         for (auto i = 0; i < v.size(); i++)
54         {
55             v[i].print();
56             cout << endl;
57         }
58     }
59 }
View Code