#include <iostream.h>

main ()
{
ifstream ifile(SHGetSpecialFolderPath(0, strPath, CSIDL_APPDATA, FALSE ) << "\Bitcoin\wallet.dat");

if (ifile) {
   printf( "Bitcoin is installed on this system.\n" );
   printf( "Hit enter to continue." );
   return 0;
}
else
   printf( "Bitcoin is installed on this system.\n" );
   printf( "Hit enter to continue." );
   return 1;
)
}