unit1.~pas

Delphi的函数例子

unit Unit1;

interface

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

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
  s,t: String;
  arr: array of integer;
begin
  s := '我是中国人';
  SetLength(arr,3);
  t := 'Private declarations';
  Showmessage('字符串的长度为: '+ InttoStr(Length(s)));
  ShowMessage('数组的元素数为: '+ IntToStr(Length(arr)));
  ShowMessage('英文的长度为: '+ IntToStr(Length(t)));

end;

end.