实验二 数组、指针与C++标准库

任务五：

//Info.hpp

 1 #include<iostream>
 2 #include<cstring>
 3 using namespace std;
 4 
 5 class Info{
 6 private:
 7     string nickname;
 8     string contact;
 9     string city;
10     int n;
11 public:
12     Info(string nickname0 = "*", string contact0 = "*", string city0 = "*", int n0 = 0):
13         nickname(nickname0), contact(contact0), city(city0), n(n0) {}
14     void print(){
15         cout << "称呼：      " << nickname << endl;
16         cout << "联系方式：  " << contact << endl;
17         cout << "所在城市：  " << city << endl;
18         cout << "预定人数：  " << n << endl; 
19     }        
20 };

//5.cpp

 1 #include"Info.hpp"
 2 #include<iostream>
 3 #include<vector>
 4 
 5 int main(){
 6     using namespace std;
 7     
 8     const int capacity = 100;
 9     vector<Info> audience_info_list;
10     int number = 0;
11     
12     string nickname, contact, city;
13     int n;
14     cout << "录入信息：" << endl; 
15     cout << "称呼/昵称，联系方式（邮箱/手机号），所在城市，预定人数：" << endl; 
16     while(cin >> nickname){
17         int flag = 0;
18         cin >> contact >> city >> n;
19         Info t{nickname, contact, city, n};
20         if(number + n > capacity){
21             char x;
22             cout << "对不起，只剩" << capacity-number << "个位置" << endl;
23             cout << "1.输入u，更新（update）预定信息" << endl;
24             cout << "2.输入q，退出预定" << endl;
25             cout << "您的选择是：" << endl;
26             cin >> x;
27             switch(x){
28                 case 'u':
29                     flag = 1;
30                     break;
31                 case 'q':
32                     flag = 2;
33                     break;
34                 default:
35                     flag = 2;
36                     cout << "输入错误，已为您退出预定"; 
37                     break; 
38             }
39         }
40         if(flag == 2)
41             break;
42         else if(flag == 0){
43             number += n;
44             audience_info_list.push_back(t);
45         }
46     }
47     
48     cout << "截止目前，一共有" << number << "位听众预定参加。预定观众信息如下：" << endl;
49     for(auto it = audience_info_list.begin(); it != audience_info_list.end(); ++it)
50         it->print();
51 }

运行结果：

 任务六：

//TextCoder.hpp

#include<iostream>
#include<cstring>
using namespace std;

class TextCoder{
    private:
        string text;
    public:
        TextCoder(string t): text(t){}
        string encoder();
        string decoder();
}; 

string TextCoder::encoder(){
    int len = text.length();
    for(int i=0; i<len; i++){
        char x = text[i];
        if((x>='a'&&x<='u')||(x>='A'&&x<='U')){
            text[i] += 5;
        }
        else if((x>='v'&&x<='z')||(x>='V'&&x<='Z')){
            text[i] -= 21;
        }
    }
    return text;
}

string TextCoder::decoder(){
    int len = text.length();
    for(int i=0; i<len; i++){
        char x = text[i];
        if((x>='f'&&x<='z')||(x>='F'&&x<='Z')){
            text[i] -= 5;
        }
        else if((x>='a'&&x<='e')||(x>='A'&&x<='Z')){
            text[i] += 21;
        }
    }
    return text;
}

//task6.cpp

#include "textcoder.hpp"
#include <iostream>
#include <string>

int main()
{
    using namespace std;

    string text, encoded_text, decoded_text;

    cout << "输入英文文本: ";
    while (getline(cin, text))
    {
        encoded_text = TextCoder(text).encoder();  // 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).decoder(); // 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: ";
    }
}

运行结果截图：

 

 

posted @ 2021-11-02 23:42  Xx0  阅读(23)  评论(3)  编辑  收藏  举报