实验3

 task5
 1 #include<iostream>
 2 #include<vector>
 3 #include<string>
 4 #include<iomanip>
 5 using namespace std;
 6 class Info {
 7     friend void print(vector<Info>& person);
 8 private:
 9     string nickname, contact, city;
10     int n;
11 public:
12     static int num;
13     Info(string name, string Contact, string City, int N) {
14         nickname = name;
15         contact = Contact;
16         city = City;
17         n = N;
18     }
19 };
20 int Info::num = 0;//用于记录已经预定位置数
21 void print(vector<Info>& person) {
22     for (int i = 0;i<person.size();i++) {
23         cout << left << setw(10) << "昵称" << setw(15) << "联系方式" << setw(10) << "所在城市" << setw(10) << "人数" << endl;
24         cout << setw(10) << person[i].nickname;
25         cout << setw(15) << person[i].contact;
26         cout << setw(10) << person[i].city << setw(10);
27         cout << person[i].n << endl;
28     }
29 }
30 //录入预定信息
31 void creat(vector<Info>& inform,string name,string Contact,string City,int N) {
32         Info temp(name, Contact,City, N);
33             inform.push_back(temp);
34             Info::num += N;//计入座位数
35 }
36 int main(){
37     cout << "录入信息" << endl;
38     cout << left << setw(10) << "昵称" << setw(20)<<"联系方式" << setw(20) << "所在城市" << setw(20) << "人数" << endl;
39     vector<Info>inform;
40     string name, City, Contact;
41     int N;
42     while (cin>>name>>Contact>>City>>N) {
43         //判断剩余容量是否能够容纳
44         if (N + Info::num <= 100) {
45             creat(inform, name, Contact, City, N);
46         }
47         else {
48             cout << "对不起，只剩余" << 100 - Info::num << "个位置" << endl;
49             cout << "1.输入u，更新预定信息" << endl;
50             cout << "2.输入p，退出预定" << endl;
51             char p;
52             cin >> p;
53             if (p == 'u') {
54                 continue;//跳过这次循环，重新录入信息
55             }
56             else if (p == 'p') {
57                 break;//退出预定录入信息
58             }
59         }
60     }
61     print(inform);
62 }

 textcoder.hpp
 1 #pragma once
 2 #include<string>
 3 using namespace std;
 4 class TextCoder {
 5 private:
 6     string text;
 7     void encoder(string &text1) {
 8         for (int i = 0; i < text.size(); i++) {
 9             if(text[i]<='z'&&text[i]>='a'||text[i]<='Z'&&text[i]>='A')
10             text1[i] += 5;
11         }
12     }
13     void decoder(string &text1) {
14         for (int i = 0; i < text.size(); i++) {
15             if (text[i] <='z' && text[i]>='a' || text[i] <='Z' && text[i]>='A')
16             text1[i] -= 5;
17         }
18     }
19 public:
20     string get_ciphertext() {
21         encoder(text);
22         return text;
23 
24     }
25     string  get_deciphertext() {
26         decoder(text);
27         return text;
28     }
29     TextCoder(string str) {
30         text = str;
31     }
32 };
task6.cpp

 1 #include "textcoder.hpp"
 2 #include <iostream>
 3 #include <string>
 4 void test() {
 5     using namespace std;
 6     string text, encoded_text, decoded_text;
 7     cout << "输入英文文本: ";
 8     while (getline(cin, text)) {
 9         encoded_text = TextCoder(text).get_ciphertext(); // 这里使用的是临时无名对象
10             cout << "加密后英文文本:\t" << encoded_text << endl;
11             decoded_text = TextCoder(encoded_text).get_deciphertext(); // 这里使用的是临时无名对象
12             cout << "解密后英文文本:\t" << decoded_text << endl;
13             cout << "\n输入英文文本: ";
14     }
15 }
16 int main() {
17     test();
18 }