map find() example

  map<string,  double>  m;
  map<string,  double>::const_iterator  mi
                                                =  m.find("it");
  if  (mi  !=  m.end())
         cout  <<  "It  is  :  "  <<  mi->second
                                                        <<  endl;
  else
         cout  <<  "Didn't  find  it"  <<  endl;