// FILE: copyline.cc
#include <stdlib.h>	    // required for EXIT_FAILURE etc
#include <fstream.h>        // required for external file streams

// COPY ONE LINE OF TEXT FROM ONE FILE TO ANOTHER
void copy_line
   (ifstream& ins,          // IN: ins stream
    ofstream& outs)         // OUT: outs stream

// Pre:  ins is opened for input and outs for output.
// Post: Next line of ins is written to outs.
//       The last character processed from ins is <nwln>;
//       the last character written to outs is <nwln>.
{
   // Local data ...
   const char nwln = '\n';  // newline character

   char next_ch;            // inout: character buffer

   // Copy all data characters from ins file stream to outs file stream.
   ins.get (next_ch);
   while ( (next_ch != nwln) && !ins.eof ())
   {
      outs.put (next_ch);
      ins.get (next_ch);
   }  // end while

   // If last character read was nwln write it to out_data.
   if (!ins.eof ())
      outs.put (nwln);
   return;
}  // end copy_line