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
 str : array [1..15] of char;
pstr : PChar; //Pchar 也就是 ^Char
begin
StrCopy(@str, 'teststr');
//在C中，数组的名称可以直接作为数组首地址指针来用
//但Pascal不是这样的，因此 str前要加上取地址的运算符
StrCat(@str, '_testok');
GetMem(pstr, sizeof(char) * 15);
StrCopy(pstr, @str);
ShowMessage(pstr);
FreeMem(pstr);

end;

end.