#property copyright "XXX"
#property link      ""
#property version   "1.00"
#property strict
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_plots   3
//--- plot Label1
#property indicator_label1  "Label1"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrRed
#property indicator_style1  STYLE_SOLID
#property indicator_width1  1
//--- plot Label2
#property indicator_label2  "Label2"
#property indicator_type2   DRAW_LINE
#property indicator_color2  clrAqua
#property indicator_style2  STYLE_SOLID
#property indicator_width2  1
//--- plot Label3
#property indicator_label3  "Label3"
#property indicator_type3   DRAW_LINE
#property indicator_color3  clrDarkOrange
#property indicator_style3  STYLE_SOLID
#property indicator_width3  1
//--- input parameters
input int      input1=200;
input int      input2=4;
//--- indicator buffers
double         Label1Buffer[];
double         Label2Buffer[];
double         Label3Buffer[];


		//definition of a function:
		double f1(double &data[], etc..) {
		//misc..
		
		} //end of function definition
		

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexBuffer(0,Label1Buffer);
   SetIndexBuffer(1,Label2Buffer);
   SetIndexBuffer(2,Label3Buffer);
   
    
  //misc arrays 
   
//---
   return(INIT_SUCCEEDED);
  }
  
  
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
 
 //--- if the size of price[] is too small
 if(rates_total<200) return(0);
  

		
 //check for enough bars:
 if(rates_total>200)
     {
     //start main calculations:
      
   double f1_data[];      
   ArrayResize(f1_data,200);
     
		//filling data array with 200 previous close prices:
		for (int i=0; i<200; i++)
		{	    f1_data[i]=Close[i];	    }
     
     //calling f1 twice with different inputs:
     Label1Buffer[0]=f1_result1(...);
     Label2Buffer[0]=f1_result2(...);
     
	 
	//doing all calculations here and then show result:
    Label3Buffer[0]=main_result;
					
   
   } //end of calculations
   
   
//--- return value of prev_calculated for next call
   return(prev_calculated);
   
   
  }
//+------------------------------------------------------------------+