unit1.pas

delphi教程,入门教程

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Edit4: TEdit;
    Edit5: TEdit;
    Edit6: TEdit;
    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
 s1m,acer:double;
begin
 s1m:=strtofloat(Edit1.text)+strtofloat(Edit2.text)
      +strtofloat(Edit3.text)+strtofloat(Edit4.text);
 acer:=s1m/4;
 Edit5.Text :=floattostr(s1m);
 Edit6.text :=floattostr(acer);

end;

end.