13. map::find

• Use find( key ) to get an iterator for a specific key:

  
      typedef map<string, int> MapT;
      typedef MapT::const_iterator MapIterT;
  
      MapT amap;
      MapIterT result = amap.find( "Fred" );
  
      if ( result != amap.end() ) {
          // Print out map in alpha. order, starting with Fred
          for( MapIterT mit = result; mit != amap.end(); mit++ ) {
              cout
                  << mit->first
                  << " "
                  << mit->second
                  << endl
                  ;
          }
      }