fig18_03.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 26 行

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

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;

      ofstream outFile( argv[ 2 ], ios::out );
      if ( !outFile )
         cout << argv[ 2 ] << " could not be opened" << endl;

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

   return 0;
}