Adding MovingAverage+100pips line to my MA indicator

#property indicator_chart_window
#property indicator_buffers 1
#property indicator_color1 Green
extern int period=5;
double SMA[];
double sum=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexBuffer(0, SMA);
   SetIndexLabel(0,"Sma");
   SetIndexStyle(0,DRAW_LINE);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
 
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int    counted_bars=IndicatorCounted();
//----
   int limit;
   if(counted_bars < 0) 
        return(-1);
   if(counted_bars > 0) 
        counted_bars--;
   limit=Bars-counted_bars-1;
   for(int i=limit; i >=0; i--) 
   {
      sum=0;
      for(int j=i+period-1;j>=i; j--)
      {
          sum+=Close[j];
      }
      SMA[i]=sum/period;
   }
return(0);
}

var MA;
function main()
{ 
MA = sma(200);
var MAextra = MA;
return new array(MA, MAextra+100);
}