unit1.pas

来自「Delphi函数参考大全的CD」· PAS 代码 · 共 43 行

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  exam :array[0..4] of string;
  s:string;
begin
   exam[0]:='请写出二叉树的中序遍历过程（非递归）';
   exam[1]:='请写出二叉树的先序遍历过程（非递归）';
   exam[2]:='请写出二叉树的后序遍历过程（非递归）';
   exam[3]:='请写出二叉树与森林的转换过程';
   exam[4]:='请写出图的广度遍历过程';
   randomize;
   s:=randomFrom(exam);
   caption:=s;
end;


end.