File I/O

 
#include <iostream>
#include <fstream>
using namespace std;

int main () {
  ofstream of;
  ifstream inf;
  string line;

  of.open ("test.lis", ios::out);
  of << "Hello world.\n";
  of << "another line.\n";
  of.close();

  inf.open( "test.lis", ios::in); 

  if (inf.is_open())
  {
    while ( inf.good() )
    {
      getline (inf,line);
      cout << "got " << line << endl;
    }
    inf.close();
  }
  return 0;
}