#include using std::cout;using std::endl;#include int main(){ std::multimap< int, double, std::less< int > > pairs; // declare the multimap pairs // 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 << "Multimap pairs contains:\nKey\tValue\n"; // use const_iterator to walk through elements of pairs for ( std::multimap< int, double, std::less< int > >::const_iterator iter =pairs.begin(); iter != pairs.end(); ++iter ) cout << iter->first << '\t' << iter->second << '\n'; cout << endl; return 0;} Multimap pairs contains:Key Value15 2.715 99.3