实验3 数组、指针与现代C++标准库

实验任务5

task5.cpp

 1 #include<iostream>
 2 #include<vector>
 3 #include<string>
 4 #include"Info.hpp"
 5 using namespace std;
 6 int main()
 7 {
 8     const int capacity=100;
 9     vector<Info> audience_info_list;
10     cout<<"录入信息："<<endl;
11     cout<<endl; 
12     cout<<"昵称\t";
13     cout<<"联系方式(邮箱/手机号)\t"; 
14     cout<<"所在城市\t"; 
15     cout<<"预定参加人数\t";
16     cout<<endl;
17     string nickname,contact,city;
18     int n,num=0;
19     while(cin>>nickname)
20     {
21         cin>>contact>>city>>n;
22         num+=n;
23     if(capacity-num>=0)
24     {
25         Info p=Info(nickname,contact,city,n);
26         audience_info_list.push_back(p);
27     }
28     else
29     {
30         num-=n;
31         char c;
32         cout<<"对不起，只剩"<<capacity-num<<"个位置."<<endl;
33         cout<<"1. 输入u,更新(update)预定信息"<<endl;
34         cout<<"2. 输入q,退出预定"<<endl;
35         cout<<"你的选择：";
36         cin>>c;
37         cout<<endl;
38         if(c =='q') 
39         break;
40         else if(c =='u')
41         {
42             cout<<"请更新您的预定信息"<<endl;
43             continue; 
44         }
45     }
46 }
47     cout<<"截至目前，一共有"<<num<<"名听众预定参加。预定听众信息如下："<<endl;
48     for(int i=0;i<audience_info_list.size();++i)
49     {
50         audience_info_list.at(i).print();
51         cout<<endl;
52      } 
53 }

Info.hpp

 1 #pragma once
 2 #include<iostream>
 3 #include<iomanip>
 4 #include<string>
 5 using namespace std;
 6 class Info{
 7     public:
 8         Info(string name0,string contact0,string city0,int n):nickname{name0},contact{contact0},city{city0},n{n}{}
 9         void print();
10     private:
11         string nickname,contact,city;
12         int n;
13 };
14 void Info::print()
15 {
16     cout<<"昵称：\t"<<nickname<<endl;
17     cout<<"联系方式：\t "<<contact<<endl;
18     cout<<"所在城市：\t "<<city<<endl;
19     cout<<"预定人数：\t "<<n<<endl;
20 }

实验任务6