1 #include <iostream>
2 #include <fstream>
3 #include <string>
4 #include <vector>
5
6 using namespace std;
7
8 void process(string s)
9 {
10
11 cout << s << endl;
12 }
13
14 int main()
15
16 {
17 vector <string> files;
18 files.push_back("one.txt");
19 files.push_back("two.txt");
20 files.push_back("three.txt");
21
22 string s;
23 vector<string>::const_iterator it = files.begin();
24 while(it != files.end())
25 {
26 ifstream input(it->c_str());//用迭代出来的文件名来创建一个流
27 if(!input)//打开一个文件失败
28 {
29 cerr << "error: can not open file:"
30 << *it << endl;
31 input.clear();
32 ++it;
33 continue;
34 }
35 while(input >> s)//打开一个文件成功
36 process(s);
37 input.close();
38 input.clear();
39 ++it;
40
41 }
42
43 return 0;
44
45
46 }
