初学delphi

今天女朋友的一门课，要求用delphi 软件编程，内容是一个计算器。当然，这个工作肯定是落在我的头上了。

这个软件是我第一次使用，边自学边进行代码编写，在n多次修改完善之后，终于成形。功能不是很多，跟C#很相似，但发现之前有很多在专业课中没有实现的功能，颇有成就感。

unit jisuanqi;
//王永维，实现简单的加减乘除计算
interface

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

type
TForm1 = class(TForm)
Button1: TButton;
Edit1: TEdit;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Button5: TButton;
Button6: TButton;
Button7: TButton;
Button8: TButton;
Button9: TButton;
Button10: TButton;
Button11: TButton;
Button12: TButton;
Button13: TButton;
Button14: TButton;
Button15: TButton;
Button16: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button5Click(Sender: TObject);
procedure Button6Click(Sender: TObject);
procedure Button7Click(Sender: TObject);
procedure Button8Click(Sender: TObject);
procedure Button9Click(Sender: TObject);
procedure Button10Click(Sender: TObject);
procedure Button11Click(Sender: TObject);
procedure Button12Click(Sender: TObject);
procedure Button13Click(Sender: TObject);
procedure Button14Click(Sender: TObject);
procedure Button15Click(Sender: TObject);
procedure Button16Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;
shu1,shu2:Integer;
Shu11,Shu22:String;
fuhao:String;
shu1changdu,shu2changdu:Integer;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'1';
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'2';
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'3';
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'4';
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'5';
end;

procedure TForm1.Button6Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'6';
end;

procedure TForm1.Button7Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'7';
end;

procedure TForm1.Button8Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'8';
end;

procedure TForm1.Button9Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'9';
end;

procedure TForm1.Button10Click(Sender: TObject);
begin
edit1.Text :=edit1.Text+'0';
end;

procedure TForm1.Button11Click(Sender: TObject);
begin
edit1.Text :='';
end;

procedure TForm1.Button12Click(Sender: TObject);
begin
Shu11:=Edit1.text;
shu1changdu:=length(Shu11);
shu1:=StrtoInt(Edit1.text);  //将字符串转变为整型
edit1.Text :=edit1.Text+'+';
fuhao:='+';
end;

procedure TForm1.Button13Click(Sender: TObject);
begin
Shu11:=Edit1.text;
shu1changdu:=length(Shu11);
shu1:=StrtoInt(Edit1.text);  //将字符串转变为整型
edit1.Text :=edit1.Text+'-';
fuhao:='-';
end;

procedure TForm1.Button14Click(Sender: TObject);
begin
Shu11:=Edit1.text;
shu1changdu:=length(Shu11);
shu1:=StrtoInt(Edit1.text);  //将字符串转变为整型
edit1.Text :=edit1.Text+'*';
fuhao:='*';
end;

procedure TForm1.Button15Click(Sender: TObject);
begin
Shu11:=Edit1.text;
shu1changdu:=length(Shu11);
shu1:=StrtoInt(Edit1.text);  //将字符串转变为整型
edit1.Text :=edit1.Text+'/';
fuhao:='/';
end;

procedure TForm1.Button16Click(Sender: TObject);
begin
Shu22:=Edit1.text;
shu2changdu:=length(Shu22);

if fuhao='+'  then
begin
Shu22:=copy(Shu22,shu1changdu+2,shu2changdu); //截取出第二个数
shu2:=StrtoInt(Shu22);  //将字符串转化为整形
edit1.Text :=InttoStr(shu1+shu2);
end;
if fuhao='-'  then
begin
Shu22:=copy(Shu22,shu1changdu+2,shu2changdu);   //截取出第二个数
shu2:=StrtoInt(Shu22);  //将字符串转变为整型
edit1.Text :=InttoStr(shu1-shu2);
end;
if fuhao='*' then
begin
Shu22:=copy(Shu22,shu1changdu+2,shu2changdu);     //截取出第二个数
shu2:=StrtoInt(Shu22);  //将字符串转变为整型
edit1.Text :=InttoStr(shu1*shu2);
end;
if fuhao='/'  then
begin
Shu22:=copy(Shu22,shu1changdu+2,shu2changdu);  //截取出第二个数
shu2:=StrtoInt(Shu22);  //将字符串转变为整型
edit1.Text :=InttoStr(shu1 Div shu2);
end;
fuhao:='';
end;

end.