fig18_03.cpp

这是C＋＋编程经典的书上实例的源代码。 （英文名是《C＋＋ how to program》第3版）

// Fig. 18.3: fig18_03.cpp
// Using command-line arguments
#include <iostream>

using std::cout;
using std::endl;
using std::ios;

#include <fstream>

using std::ifstream;
using std::ofstream;

int main( int argc, char *argv[] )
{
   if ( argc != 3 )
      cout << "Usage: copy infile outfile" << endl;
   else {
      ifstream inFile( argv[ 1 ], ios::in );

      if ( !inFile ) {
         cout << argv[ 1 ] << " could not be opened" << endl;
         return -1;
      }

      ofstream outFile( argv[ 2 ], ios::out );

      if ( !outFile ) {
         cout << argv[ 2 ] << " could not be opened" << endl;
         inFile.close();
         return -2;
      }

      while ( !inFile.eof() )
         outFile.put( static_cast< char >( inFile.get() ) );

      inFile.close();
      outFile.close();
   }

   return 0;
}



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 * (C) Copyright 2000 by Deitel & Associates, Inc. and Prentice Hall.     *
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