C++/Set Multiset/set begin end

Use std::copy to print all elements in a set

<source lang="cpp">

1. include <iostream>

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

1. include <set>
2. include <algorithm>
3. include <iterator> // ostream_iterator

int main() {

  double a[ 5 ] = { 2.1, 4.2, 9.5, 2.1, 3.7 };
  std::set< double, std::less< double > > doubleSet( a, a + 5 );;
  std::ostream_iterator< double > output( cout, " " );
  cout << "doubleSet contains: ";
  std::copy( doubleSet.begin(), doubleSet.end(), output );
  cout << endl;
  return 0;

} /* doubleSet contains: 2.1 3.7 4.2 9.5

*/
       
 </source>