rlast<>'''''''' then begin if s_characterlast=''''X'''' then begin edit1.Text:=floattostr(strtofloat(s_number) * strtofloat(edit1.Text )); s_number:=edit1.text; end;
if s_characterlast=''''+'''' then begin edit1.Text:=floattostr(strtofloat(s_number) + strtofloat(edit1.Text )); s_number:=edit1.text; end;
if s_characterlast=''''-'''' then begin edit1.Text:=floattostr(strtofloat(s_number) - strtofloat(edit1.Text )); s_number:=edit1.text; end;
if s_characterlast=''''/'''' then begin edit1.Text:=floattostr(strtofloat(s_number) / strtofloat(edit1.Text )); s_number:=edit1.text; end; end; j:=''''3432''''; end;
procedure TForm1.FormShow(Sender: TObject); begin j:=''''''''; s_type:=''''1''''; end;
procedure TForm1.Button18Click(Sender: TObject); begin edit1.text:=''''''''; end;