#include using std::cout;using std::endl;#include int main(){ std::multimap< int, double, std::less< int > > pairs; // declare the multimap pairs cout << "There are currently " << pairs.count( 15 ) << " pairs with key 15 in the multimap\n"; // insert two value_type objects in pairs pairs.insert( std::multimap< int, double, std::less< int > >::value_type( 15, 2.7 ) ); pairs.insert( std::multimap< int, double, std::less< int > >::value_type( 15, 99.3 ) ); cout << "After inserts, there are " << pairs.count( 15 ) << " pairs with key 15\n\n"; cout << endl; return 0;}/* There are currently 0 pairs with key 15 in the multimapAfter inserts, there are 2 pairs with key 15 */