clientu.pas

source for card readers

unit ClientU;

// Immutable: read-only properties

interface

type

  TClient = class (TObject)
  private
    FAccNo: integer;
    FCName: string;
    function GetAccNo: string;
  public
    constructor Create (ACName, AnAccNo: string); // no destructor
    property AccNo: string read GetAccNo;	// no write method
    property CName: string read FCName;	// no write mapping
  end; // end TClient = class (TObject)

implementation

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

{ TClient }

constructor TClient.Create(ACName, AnAccNo: string);
begin
  inherited Create;
  FAccNo := StrToInt(AnAccNo);  // data fields set in constructor only
  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

end. // end ClientU