类型转换不成功
程序代码：var ck :integer; ckk :double; begin ck := strtoint(edit5.Text) + strtoint(edit6.Text); edit1.Text := inttostr(ck); ck := strtoint(edit5.Text) - strtoint(edit6.Text); edit2.Text := inttostr(ck); ck := strtoint(edit5.Text) * strtoint(edit6.Text); edit3.Text := inttostr(ck); ckk := strtofloat(edit5.Text) div strtofloat(edit6.Text); edit4.Text := floattostr(ck);[错误] Unit1.pas(50): Operator not applicable to this operand type
[致命错误] Project1.dpr(5): Could not compile used unit 'Unit1.pas' 这是怎么一回事？
