实验3 数组，指针与现代c++标准库

实验五：

Info.hpp

#include<iostream>
#include<string>
#include<iomanip>
using namespace std;
  class Info
  {
        private:
              string nickname;
              string contact;
              string city;
              int n;
        public:
              Info(string nick=" ",string cont=" ",string cit=" ",int count=0): nickname{nick},contact{cont},city{cit},n{count}
              {
                      number+=n;
              }
            void back()
             { 
                 number -= n; 
             }
        void print()  const
        { 
             cout<<left<<setw(20)<<"昵称: "<<nickname<<endl; 
             cout<<left<<setw(20)<<"联系方式: "<<contact<<endl;
             cout<<left<<setw(20)<<"所在城市: "<<city<<endl;
             cout<<left<<setw(20)<<"预定参加人数: "<<n<<endl; 
        }
        static int number;
  };
  
    int  Info::number =0;

livehouse.cpp：

#include<iostream>
#include<string>
#include<vector>
#include"Info.hpp"
#include<iomanip>
using namespace std;
 void input(string &nickname,string &contact,string &city,int &n)
 {
       cin>>nickname;
       cin>>contact;
       cin>>city;
       cin>>n;
 }
   int main()
   {
           const int capacity=100;
           vector<Info> audience_info_list{0};
        string a;
        cout<<"录入信息： "<<endl;
            cout<<"   姓名"<<setw(20)<<"联系方式"<<setw(20)<<"  城市"<<setw(20)<<"预定人数"<<endl;
        while(cin>>a)  //作为每一次最前面的输入，不等于ctrl+z的时候接着输入类成员 
        {
            string nickname, contact, city;
             int n;
              input(nickname,contact,city,n);
              Info t(nickname,contact,city,n);
              audience_info_list.push_back(t);
              if(Info::number>capacity)
              {
                    audience_info_list.back();
                   t.back();
                   cout<<"对不起，只剩"<<capacity-Info::number<<"个位置"<<endl;
                     char select;
                    cout<<"1. 输入u，更新预定信息"<<endl;
                    cout<<"2. 输入q，退出预定"<<endl;
                    cout<<"你的选择是： ";
                    cin>>select;
                    if(select=='u')
                      continue;
                    else if(select=='q')
                      break;
              }
              
         }
         cout<<"截至目前，一共有"<<Info::number<<"名观众参加。 "<<"预定听众信息如下: "<<endl;
         cout<<endl;
          for (const auto &u:audience_info_list )
             {
                 
             u.print();
             cout<<endl;
             cout<<endl;
              }
           return 0; 
            
   }
    

 

 

 

 

 

实验六：

jiemi.cpp

#include<iostream>
#include<vector>
#include<string>
using namespace std;
  class TextCoder
  {
        private:
             string text;
        public:
              TextCoder(string t=" "): text{t}
              {
              }
              string v;
              string v1;
        private:
           void encoder()
           {
                  v=text;
                   int i=0;
                   for(i=0;i<v.length();i++)
                   {
                        if(v[i]>='a'&&v[i]<='z')
                           {
                                 if(v[i]+5<='z')
                                      v[i]=v[i]+5;
                                   else
                                      v[i]='a'+v[i]+5-'z';
                           }
                    else if(v[i]>='A'&&v[i]<='Z')
                           {
                                 if(v[i]+5<='Z')
                                      v[i]=v[i]+5;
                                   else
                                      v[i]='A'+v[i]+5-'Z';
                           }
                   }
                   text=v;
                  
           }
           private:
           void coder()
           {
                   v1=text;
                   int j=0;
                   for(j=0;j<v1.length();j++)
                   {
                        if(v1[j]>='a'&&v1[j]<='z')
                           {
                                 if(v1[j]-5>='a')
                                      v1[j]=v1[j]-5;
                                   else
                                      v1[j]='z'-('a'-v1[j]+5);
                           }
                    else if(v1[j]>='A'&&v1[j]<='Z')
                           {
                                 if(v1[j]-5>='A')
                                      v1[j]=v1[j]-5;
                                   else
                                      v1[j]='Z'-('A'-v1[j]+5);
                           }
                   }
                   text=v1;
                  
           }
           public:
        string get_deciphertext()
        {
            coder();
            return text;
        }
        string get_ciphertext()
           {
                 encoder();
                return text;
           }
  };
  
  

  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();; 
cout << "加密后英文文本:\t" << encoded_text << endl;
decoded_text = TextCoder(encoded_text).get_deciphertext(); 
cout << "解密后英文文本:\t" << decoded_text << endl;
cout << "\n输入英文文本: ";
}
}
int main() {
test();
}