unit1.pas

本光盘是《Delphi 7应用教程》一书的配套光盘

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Label2: TLabel;
    Edit2: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
Function Fibo(n:Integer):Integer;//自定义函数求兔子数
begin
  Case n of
    1:Fibo:=1;
    2:Fibo:=1;
    Else
      Fibo:=Fibo(n-1)+Fibo(n-2);//递归函数
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  m:Integer;
begin
  m:=StrToInt(Edit1.Text);
  Edit2.Text:=IntToStr(Fibo(m)); //调用递归函数
end;

end.