Tutorial 3 : Menggunakan Variabel

//+------------------------------------------------------------------+
//|                                                    tutorial3.mq4 |
//|                        Copyright 2020, MetaQuotes Software Corp. |
//|                                            https://triantoadi.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2020, MetaQuotes Software Corp."
#property link      "https://triantoadi.com"
#property version   "1.00"
#property strict
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
  int A = 10;
  int B = 5;
  int C;
  
  double var1     = 0.5;
  double var2     = 20;
  double result   = var1 / var2;
  
  string greeting = "Hello";
  string space    = " ";
  string name     = "Adi";
  string message;
  
  C = A + B;
 // message = "Nilai A adalah " + string(A);
  
  message = greeting + space + name;
  
  Alert(message);
  
  //Alert(C);
  //Alert(result);
  //Alert(message);
  }