map::upper_bound

#include <map>
#include <iostream>
                                                                        
using std::map,
    std::pair,
    std::cerr;
        
typedef map<std::string, int> my_map;
typedef pair<std::string, int> my_pair;
        
std::ostream& operator<<(std::ostream& os, my_map const& map)
{
    os << "{ ";
    int count = 0;
            
    for (my_pair p : map){
        os << "'" << p.first << "' is " << p.second ;
        if (count < map.size() - 1){
            os << ", ";
        }
        ++count;
    }
    return os << "}";
}
       
int main(){
    my_map a{{"v", 224}, {"w", 425}, {"x", 192}};   
    my_map::iterator ubi = a.upper_bound("w");
    cerr << "upper_bound for c: " <<  ubi->first << " " << ubi->second << "\n";

    return 0;
}