新手vip完成的作业，给点指导。

qq502984975

下边是修改后的源码：unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Swap_fun(var str_a:String ; var str_b:String);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
  str1: String;
  str2: String;
begin
  str1:= Edit1.Text;
  str2:= Edit2.Text;
  Swap_fun(str1, str2);
  Edit1.Text:= str1;
  Edit2.Text:= str2;
end;
procedure TForm1.Swap_fun(var str_a:String ;var str_b:String);
var
   temp: String;
begin
  temp:= str_a;
  str_a:= str_b;
  str_b:= temp;
end;
end.

小甲鱼

Good!!

就如丶初见

楼主加油，我们都看好你哦。

□_谁_□_枫_□

楼主加油，我们都看好你哦。