如何将字节转换为负数 [英] How to convert byte to negative

问题描述

Dim m(5), x(5) As Byte
        For i As Integer = 0 To 4
            m(i) = i
        Next
        x(2) = -m(4)'Here it shows error
        MsgBox(x(2))

x(2)= -m(4)处的行显示错误. :-O
有什么方法可以将字节值转换为等效的-ve并将其存储在另一个字节变量中????

The line at x(2) = -m(4) shows an Error. :-O
Is there any method to convert a byte value to it''s -ve equivalent and store it in another byte variable????

推荐答案

.
字节是未签名的数据类型(字节上的MSDN [ ^ ])
由于没有符号，因此不能为负！

将来，也请发布错误消息-它可以帮助我们找出您遇到的困难.

You can''t.
Byte is an UNSIGNED data type (MSDN on Byte[^])
Since it has no sign, it cannot be negative!

In future, post the error message as well - it helps us to work out what you are having difficulties with.

您可以将其强制转换为int或short，然后翻转符号-但是您需要稍微更改一下设计以适应非字节存储.

You can cast it to an int or a short, then flip the sign - but you''d need to change your design a little to accommodate for non-byte storage.

谢谢大家，我已经将它简化了，而且效果很好

:cool :: cool :: cool :: cool :: cool:

Thanks Everyone I have casted it to short and it works great

:cool::cool::cool::cool::cool:

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