Контрольная работа: Характеристика якості програмних засобів

case Key of

'0'..'9',Chr(8):;

'-': if (pos('-',Edit1.Text)= 0) and (length(Edit1.Text) = 0)

Then Key := '-'

else Key := Chr(0);

',': if pos(',',Edit1.Text)<>0

THen Key := Chr(0);

else Key := Chr(0);

end;

end;

procedure TForm1.Edit2KeyPress(Sender: TObject; var Key: Char);

begin

case Key of

'0'..'9',Chr(8):;

'-': if (pos('-',Edit2.Text)= 0) and (length(Edit2.Text) = 0)

Then Key := '-'

else Key := Chr(0);

',': if pos(',',Edit2.Text)<>0

THen Key := Chr(0);

else Key := Chr(0);

end;

end;

procedure TForm1.Edit3KeyPress(Sender: TObject; var Key: Char);

begin

case Key of

'0'..'9',Chr(8):;

',': if pos(',',Edit3.Text)<>0

THen Key := Chr(0);

else Key := Chr(0);