Count elements in multiset by value : multiset count « Set Multiset « C++

1. C++
2. Set Multiset
3. multiset count

Count elements in multiset by value

 
 

#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 a[ 10 ] = { 7, 22, 9, 1, 18, 30, 100, 22, 85, 13 };
   std::multiset< int, std::less< int > > intMultiset;
   std::ostream_iterator< int > output( cout, " " );

   cout << "There are currently " << intMultiset.count( 15 )
      << " values of 15 in the multiset\n";

   intMultiset.insert( 15 );
   intMultiset.insert( 15 );
   cout << "After inserts, there are " << intMultiset.count( 15 )
      << " values of 15 in the multiset\n\n";


   cout << endl;
   return 0;
}
/* 
There are currently 0 values of 15 in the multiset
After inserts, there are 2 values of 15 in the multiset



 */
        
  

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