iterator that cannot be used to change element values in multiset : multiset iterator « set multiset « C++ Tutorial

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C++ Tutorial » set multiset » multiset iterator 
19.17.1.iterator that cannot be used to change element values in multiset
#include <iostream>
using std::cout;
using std::endl;

#include <set> // multiset class-template definition

#include <algorithm> // copy algorithm
#include <iterator> // ostream_iterator

int main()
{
   int a10 722911830100228513 };
   std::multiset< int, std::less< int > > intMultiset;
   std::ostream_iterator< int > outputcout, " " );

   intMultiset.insert15 );
   intMultiset.insert15 );


   // iterator that cannot be used to change element values
   std::multiset< int, std::less< int > >::const_iterator result;

   // find 15 in intMultiset; find returns iterator
   result = intMultiset.find15 );

   if result != intMultiset.end() ) // if iterator not at end
      cout << "Found value 15\n"// found search value 15

   cout << endl;
   return 0;
}
Found value 15
19.17.multiset iterator
19.17.1.iterator that cannot be used to change element values in multiset
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