Libray

标签：find substr book file include data Libray

 1 #include <iostream>
 2 #include <fstream>
 3 #include <map>
 4 using namespace std;
 5 struct book{
 6     string name;
 7     float moeny;
 8     string cbs;
 9 };
10 void _main(){
11     cout<<"Hello,welcome to the library！"<<endl;
12     cout<<"   What do I do for you?"<<endl;
13     cout<<"         1.借阅"<<endl;
14     cout<<"         2.增书"<<endl;
15     cout<<"         3.查书"<<endl;
16     cout<<"         4.还书"<<endl;
17     cout<<"         5.关闭"<<endl;
18 }
19 int main(int argc, char** argv) {
20     string data,k;
21     map<string,book> my_map;
22     book sx;
23     ifstream file;
24     file.open("1.txt");
25     //
26     book c;
27     while(getline(file,data)){
28         if(data.length()>4){
29             c.name = data.substr(0,data.find("|"));
30             data = data.substr(data.find("|")+1);
31             c.moeny=stof(data.substr(0,data.find("|")));
32             data = data.substr(data.find("|")+1);
33             c.cbs = data.substr(0,data.find("|"));
34             data = data.substr(data.find("|")+1);
35             k = data.substr(0,data.find("|"));
36             my_map.insert(pair<string,book>(k,c));
37         }    
38         if(file.eof()){
39             break;        
40         }
41     }
42     file.close();
43     int i;
44     while(1){
45         system("cls");
46         _main();
47         cin>>i;
48         switch(i){
49             case 1:{
50                 
51                 break;
52             }
53             case 5:{
54                 return 0;
55                 break;
56             }
57             system("pause");
58         }
59     }
60     return 0;
61 }

 

标签：find,substr,book,file,include,data,Libray
From： https://www.cnblogs.com/liujiaxing-/p/18076754