Finding value of high & low

double High[],Low[];
//+------------------------------------------------------------------+
//| Get Low for specified bar index                                  |
//+------------------------------------------------------------------+
double iLow(string symbol,ENUM_TIMEFRAMES timeframe,int index)
  {
   double low=0;
   ArraySetAsSeries(Low,true);
   int copied=CopyLow(symbol,timeframe,0,Bars(symbol,timeframe),Low);
   if(copied>0 && index<copied) low=Low[index];
   return(low);
  }
//+------------------------------------------------------------------+
//| Get the High for specified bar index                             |
//+------------------------------------------------------------------+
double iHigh(string symbol,ENUM_TIMEFRAMES timeframe,int index)
  {
   double high=0;
   ArraySetAsSeries(High,true);
   int copied=CopyHigh(symbol,timeframe,0,Bars(symbol,timeframe),High);
   if(copied>0 && index<copied) high=High[index];
   return(high);
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//--- at each tick we output the High and Low values for the bar with index,
//--- equal of the tick second
   datetime t=TimeCurrent();
   int sec=t%60;
   printf("High[%d] = %G  Low[%d] = %G",
          sec,iHigh(Symbol(),0,sec),
          sec,iLow(Symbol(),0,sec));
  }