clientu.pas

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unit ClientU;               

// Immutable: no Set methods

interface

type

  TClient = class (TObject)
  private
    FAccNo: integer;
    FCName: string;
    function GetAccNo: string;
    procedure SetAccNo(const AnAccNo: string);
  public
    constructor Create (ACName, AnAccNo: string);
    property AccNo: string read GetAccNo write SetAccNo;	// method map
    property CName: string read FCName write FCName;	// direct map
  end; // end TClient = class (TObject)

implementation

uses SysUtils;	// for Int <-> Str conversions

{ TClient }

constructor TClient.Create(ACName, AnAccNo: string);
begin
  inherited Create;  // First invoke superclass's constructor
  FAccNo := StrToInt(AnAccNo);
  FCName := ACName;
end; // end constructor TClient.Create

function TClient.GetAccNo: string;
begin
  if FAccNo < 100000 then
    Result := IntToStr(FAccNo + 100000)
  else
    Result := IntToStr(FAccNo);
end; // end function TClient.GetAccNo

procedure TClient.SetAccNo(const AnAccNo: string);
begin
  FAccNo := StrToInt(AnAccNo);	// Client must check 6 digits max
end; // end procedure TClient.SetAccNo

end. // end ClientU