C++笔记谓词 1

 1 #include <stdio.h>
 2 #include <string>
 3 #include <iostream>
 4 #include <fstream>
 5 #include <iterator>
 6 #include <vector>
 7 #include <algorithm>
 8 #include <map>
 9 using namespace std;
10 map<string,int> map_meng;
11 
12 void print(const pair<string,int> &r)
13 {
14     cout<<r.first<<" "<<r.second<<endl;
15 }
16 
17 void record(const string &s)
18 {
19     map_meng[s]++;
20 }
21 int  main()
22 {
23     
24     ifstream is("1");
25 
26     istream_iterator<string> ii(is);
27     istream_iterator<string> eos;
28 
29     for_each(ii,eos,record);
30     for_each(map_meng.begin(),map_meng.end(),print);
31     return 0;
32 }
C++笔记 谓词 1

C++笔记谓词 1
