Инициализация переменных на разных уровнях.

//+------------------------------------------------------------------+
//|                                               Checking_Array.mq4 |
//|                      Copyright © 2006, MetaQuotes Software Corp. |
//|                                        https://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, MetaQuotes Software Corp."
#property link      "https://www.metaquotes.net/"
 
#property indicator_chart_window
int    start;
int    variable;
int    Array[10];
string str1, str2;
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
 {
  start++;
  str1 = StringConcatenate ("variable = ", variable, " ; Array[9] = {", Array[1], ", ", Array[2], ", ", Array[3], ", ", Array[4], ", ", Array[5], ", ", Array[6], ", ", Array[7], ", ", Array[8], ", ", Array[9], "};");
  variable = 123456789;
  for (int i = 1; i <= 9; i++) Array[i] = i;
  str2 = StringConcatenate ("variable = ", variable, " ; Array[9] = {", Array[1], ", ", Array[2], ", ", Array[3], ", ", Array[4], ", ", Array[5], ", ", Array[6], ", ", Array[7], ", ", Array[8], ", ", Array[9], "};");
  Comment ("start = ", start, "\n", str1, "\n", str2);
  return(0);
 }
//+------------------------------------------------------------------+