Add values to a std::multimap

Question

I'm trying to print out the five most used values. But when I changed my map to a multimap I broke the code where I add values to the map. How can I add values to a multimap? Can it be done in a similar way as I add values to a map?

// Create a map for keeping track of how many occurences of the different colors
    multimap<string, int> hexmap;

    // Add the hex values to the map
        for(int i = 0; i < imagesize; i ++)
        {
            hexmap[colors[i]]++;
        }

        typedef std::multimap<int, string> Mymap;
        Mymap dst;

        std::transform(hexmap.begin(), hexmap.end(), 
                   std::inserter(dst, dst.begin()), 
                   [](const std::pair<string,int> &p ) 
                   { 
                     return std::pair<int, string>(p.second, p.first); 
                   }
                   );


        Mymap::iterator st = dst.begin(),it;
        size_t count = 5;
        for(it = st; ( it != dst.end() ) &&  ( --count ); ++it)
        std::cout << it->second << it->first << endl;

Answer 1

"I'm trying to print out the five most used values."

In this case, you don't have to use hexmap as std::multimap just std::map will do the job

However std::multimap for dst should be required

Answer 2

You add elements to a std::multimap<K, V> using insert() or emplace(), e.g.:

std::multimap<std::string, int> map;
map.insert(std::make_pair("hello" , 1));
map.insert({ "world", 0 });
map.emplace("hello", 0);

You'd locate objects in the std::multimap<K, V> using it's find() member, e.g.:

std::multimap<std::string, int>::iterator it = map.find("hello");