C bulider计算器初步

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
int   flag=0; //ÓÃ×÷±êÖ¾ÔËËãÖÖÀà
int   clearflag=0;//¿ÉÓÃÀ´±êÖ¾°´ÏÂÔËËã·û²»Á¢¼´ºóÇå¿ÕÎı¾¿ò£¬¹¦ÄÜÀàËƼÆËãÆ÷
int   temp1;//ÓÃ×÷¼Ä´æÔËËãÇ°µÄÊý
float temp2;//ÓÃ×÷¼Ä´æÔËËãµÄ½á¹û
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
        Form1->Edit1->Clear();
        temp1=0;
        temp2=0;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
        if(clearflag==0)//±íʾÕâÊÇ°´ÏÂÔËËã·û¼üÖ