022浅谈Delphi过程与函数03 - 零基础入门学习Delphi022

rongzhen123

视频最后那个小甲鱼的疑惑那个要怎么改

panyongyuan

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Swap_fun(var str_a,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;
  temp: 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,str_b:String);
var
temp:string;
begin
  temp:= str_a;
  str_a:= str_b;
  str_b:= temp;
end;

end.