// ConsoleApplication10.cpp : 定义控制台应用程序的入口点。

 //

 #include "stdafx.h"

 #include <iostream>

 #include <fstream>

 #include <sstream>

 using namespace std;

 void print(istream &in)

 {

     string str;

     while (in >> str)

     {

         cout << str << endl;

     }

 }

 int main()

 {

     ifstream in("d://hello.txt");

     print(in);

     in.clear();

     in.close();

     return ;

 }

 #include "stdafx.h"

 #include <iostream>

 #include <fstream>

 #include <sstream>

 #include <vector>

 using namespace std;

 int main()

 {

     vector<string> vect;

     vect.push_back("d://hello0.txt");

     vect.push_back("d://hello.txt");

     vect.push_back("d://hello1.txt");

     vect.push_back("d://hello2.txt");

     for (vector<string>::iterator begin = vect.begin(); begin != vect.end(); ++begin)

     {

         ifstream in;

         in.open(begin->c_str());

         if (!in)

         {

             cout << begin->c_str() << " does not exist in the system!!!" << endl;

             continue;

         }

         cout << "opening the file with name is: " << begin->c_str() << endl;

         string str;

         while (in >> str)

         {

             cout << str << endl;

         }

         in.clear();

         in.close();

     }

     return ;

 }