C / C++ / MFC

#include <string>
#include <fstream>
#include <iostream>
 
using namespace std;
 
int main()
{
  ifstream in("test.txt");
  for( ; ; ){
    string str;
    if(!getline(in,str))break;
    cout<<str<<"LF"<<endl;
  }
  return 0;
}

while (1)
{
   if (!std::getline (file, line1))
      break;
		
   std::streampos here = file.tellg();
   std::getline (file, line2);
   file.seekg (here);
   ....
}

while (1)
{
   if (!std::getline (file, line1))
      break;
		
   std::streampos here = file.tellg();
   std::getline (file, line2);
   <font color=#ff0000>file.clear();</font>
   file.seekg (here);
   ....
}