3GL   4GL   5GL  

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  if (Self.I1_GetVersion() == 1) {...

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The man thinks, the horse thinks,
the sheep thinks, the cow thinks,
the dog thinks. The fish doesn't think.
The fish is mute. Expressionless.
The fish doesn't think, because the fish knows everything.
Iggy Pop, "This is a Film"

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CFoo *Foo = new CFoo();
Foo->Name = "My Foo";
DoSomethingStrange(&Foo); //  Foo   CBar*
cout << Foo->Name; //  !  CBar    Name.

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MyVar = 1;
Message(MyVar + 1); // "2"
MyVar = "Text string";
Message(MyVar + 1); // "Text string1"

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enum eGender 
{
  Male, Female
}

class cMale 
{
  //    ,  cMale = (cHuman, cMale)
  autoclassify as cHuman;
  public
    var Wife as cFemale;
}

class cFemale 
{
  autoclassify as cHuman;
  public
    var Husband as cMale;
}

class cHuman 
{
  private
    var Geneder as eGender;
  public
    var Name as String;

    function GetGender() as eGender 
    {
      Result = Gender;
    }

    procedure SetGender(AGender as eGender) 
    {
      if (AGender = Female) 
      {
        declassify this as cMale;
        classify this as cFemale;
      } 
      else if (AGender = Male) 
      {
        declassify this as cFemale;
        classify this as cMale;
      } 
      else 
      {
        declassify this as cMale;
        declassify this as cFemale;
      }
    }
} // cHuman
...
 // ,     
procedure QueryAndSetGender(Somebody as cHuman) 
{
  var Choice as eGender;
  Choice = App.AskUserChoice("Somebody is", Somebody.GetGender(),
           eGender::Male, "male",
           eGender::Female, "female"); //   
  if (Choice <> null)
    Somebody.SetGender(Choice);
  //   . Somebody -   cHuman
  // declassify Somebody as cHuman;  
  // <<<<      
} // QueryAndSetGender

// ,     
procedure Male2Female(AMale as cMale) 
{
  if (App.MessageBox("Are you sure?", MB_YES + MB_NO + MB_DEFBUTTON2) = IDYES)
    // :    ?
    AMale.SetGender(eGender::Female);
  if (AMale.Wife <> null) // , ...
    App.MessageBox(AMale.Name + " is married to " + AMale.Wife.Name, MB_OK);
  else
    App.MessageBox(AMale.Name + " isn`t married", MB_OK);
} // Male2Female

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            3GL   4GL   5GL  

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