SIGFPE错误，为什么？

Question

我有以下代码：

procedure TForm1.FormCreate(Sender: TObject);
var
  cpic: tcomponent;
  whichcol: integer; // have tried extended types
  whichrow: integer; // have tried extended types
begin
  for cpic in form1 do
  begin
    if (cpic.ClassType = timage) and (cpic.Tag = 10) then
    begin
      whichcol := timage(cpic).left - left div gap;
      whichrow := timage(cpic).Top - top div gap;
    end;
  end;
end;

这将导致以下错误：

错误

project1.exe引发异常类“External:SIGFPE”。

与:作为概述的错误：

whichcol := (timage(cpic).left - left) div gap;

方程不应该仅仅返回一个数字值吗？

Answer 1

SIGFPE =浮点误差

听起来是零除法。你确定gap不是零？