// Chapter 4 of C++ How to Program // Programming Challenge 11 #include using std::cout; using std::endl; #include using std::setw; int main() { const int SIZE = 1000; int array[ SIZE ]; int count = 0; for ( int k = 0; k < SIZE; ++k ) array[ k ] = 1; for ( int i = 2; i < SIZE; ++i ) if ( array[ i ] == 1 ) for ( int j = i; j < SIZE; ++j ) if ( j % i == 0 && j != i ) array[ j ] = 0; // range 2 - 999 for ( int q = 2; q < SIZE; ++q ) if ( array[ q ] == 1 ) { cout << setw( 3 ) << q << " is a prime number.\n"; ++count; } // end if cout << "A total of " << count << " prime numbers were found." << endl; return 0; } // end main /************************************************************************** * (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice * * Hall. All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * *************************************************************************/