/* ECP: FILEname=fig14_3.cpp */
/* 1*/   #include <iostream.h>
/* 2*/   #include <fstream.h>
/* 3*/   #include <string.h>

/* 4*/   // Copy from sourcefile to destfile.  Return number of
/* 5*/   // Characters copied; -1 for errors.

/* 6*/   int
/* 7*/   Copy( const char *DestFile, const char *SourceFile )
/* 8*/   {
/* 9*/       int CharsCounted = 0;
/*10*/       char Ch;

/*11*/       if( strcmp( SourceFile, DestFile ) == 0 )
/*12*/       {
/*13*/           cerr << "Can not copy to self" << endl;
/*14*/           return -1;
/*15*/       }

/*16*/       ifstream Sfp( SourceFile, ios::in );
/*17*/       if( !Sfp )
/*18*/       {
/*19*/           cerr << "Can not open input file " << SourceFile << endl;
/*20*/           return -1;
/*21*/       }

/*22*/       ofstream Dfp( DestFile, ios::out );
/*23*/       if( !Dfp )
/*24*/       {
/*25*/           cerr << "Can not open output file " << DestFile << endl;
/*26*/           return -1;
/*27*/       }

/*28*/       while( Sfp.get( Ch ) )
/*29*/           if( !Dfp.put( Ch ) )
/*30*/           {
/*31*/               cerr << "Unexpected error during write." << endl;
/*32*/               break;
/*33*/           }
/*34*/           else
/*35*/               CharsCounted++;

/*36*/       return CharsCounted;
/*37*/   }