unit1.pas

来自「本光盘是《Delphi 7应用教程》一书的配套光盘」· PAS 代码 · 共 48 行

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Button1: TButton;
    Label3: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
Procedure cj(k1,k2:Integer;var k:Integer);//形参k为变量参数
begin
  k:=k1*k2;                     //乘积赋值给k
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  m1,m2,m:Integer;
begin
  m:=0;                         //给变量赋初值
  m1:=StrToInt(Edit1.Text);
  m2:=StrToInt(Edit2.Text);
  cj(m1,m2,m);                  //调用过程求乘积
  Edit3.Text:=IntToStr(m);      //将结果用编辑框显示出来
end;

end.