real volume

[ejmin ejoni]

hi guys , i want write a program for calculate deffrent of close price between last tick and one before it , but i dont know whats the problem

#property copyright "Copyright 2021, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
double closes[];
double deffrent[];
//------------------------------------------------------------------
void OnTick()
  {
     int i=(int) Volume[0];
       closes[i]=Close[0];
       deffrent[i]=10000*(closes[i]-closes[i-1]);
       Comment("real valume = "+DoubleToStr(deffrent[i],2));
      
   
  }
//+------------------------------------------------------------------+

[Navdeep Singh]

ejmin ejoni:

hi guys , i want write a program for calculate deffrent of close price between last tick and one before it , but i dont know whats the problem

Every tick needs to be stored in a different element and the array to be sized accordingly.

Its seems MQL5 has a function to get tick data. See if it helps 

[William Roeder]

1. Do not post code that will not even compile. You have no variable i.
   

2. You need only the previous and current tick; arrays are not required.

   double closeCur=0;
   
   ⋮    
   double closePre = closeCur; closeCur = Close[0]; // Or Bid   
   double dif = (closeCur - closePre);

3. Code fails on JPY pairs and metals.	deffrent[i]=10000*(closes[i]-closes[i-1]);
   Don't hard code constants	deffrent[i]= (closes[i]-closes[i-1]) / _Point;