unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;type
TForm1 = class(TForm)
Label1: TLabel;
Edit1: TEdit;
Button1: TButton;
Labresult: TLabel;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
var r,c,s:real;
const pi=3.14159;
begin
r:=strtofloat(edit1.text);
c:=2*pi*r;
s:=pi*sqr(r);
Labresult.Caption:='该圆的周长是:’+floattostr(c)+chr(13)+‘面积是:’+floattostr(s); 这行代码有错吗,能帮我改改吗,谢谢(这行和上一行是同一行代码)end;end.
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;type
TForm1 = class(TForm)
Label1: TLabel;
Edit1: TEdit;
Button1: TButton;
Labresult: TLabel;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
var r,c,s:real;
const pi=3.14159;
begin
r:=strtofloat(edit1.text);
c:=2*pi*r;
s:=pi*sqr(r);
Labresult.Caption:='该圆的周长是:’+floattostr(c)+chr(13)+‘面积是:’+floattostr(s); 这行代码有错吗,能帮我改改吗,谢谢(这行和上一行是同一行代码)end;end.
Labresult.Caption:='该圆的周长是:'+floattostr(c)+chr(13)+'面积是:'+floattostr(s);
const
pi=3.14159;
var
r,c,s:real;begin
r:=strtofloat(edit1.text);
c:=2*pi*r;
s:=pi*sqr(r);
Caption:='该圆的周长是:'+floattostr(c)+chr(13)+'面积是:'+floattostr(s);//
end;