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// map::equal_range
#include <iostream>
#include <map>
int main ()
{
std::map<char,int> mymap;
mymap['a']=10;
mymap['b']=20;
mymap['c']=30;
std::pair<std::map<char,int>::iterator,std::map<char,int>::iterator> ret;
ret = mymap.equal_range('b');
std::cout << "lower bound points to: ";
std::cout << ret.first->first << " => " << ret.first->second << '\n';
std::cout << "upper bound points to: ";
std::cout << ret.second->first << " => " << ret.second->second << '\n';
return 0;
}
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