如何知道如果一个二进制数重新presents负数？ [英] how to know if a binary number represents a negative number?

问题描述

我读了一些C文本。在正值和负值会议中，笔者提到的重$ P $的几种方法以二进制形式psenting负数。

I am reading some C text. In the Negative and Positive Values session, the author mentioned several ways of representing a negative number in binary form.

我明白所有的方式，想知道是否有给二进制数，我们可以判断它是否是负的？

I understood all of the way and was wondering if with a give binary number, can we determine if it is negative?

例如，在-92具有二进制形式：10100100.但是，如果我们给出10100100，我们可以说是-92，而不是其他的非负数

For example, the -92 has the binary form: 10100100. But if we are given 10100100, can we say that is -92, and not other non-negative number?

推荐答案

这取决于重新presentation，当然。在补，这被广泛使用，你只需看看最显著位。

It depends on the representation, of course. In two's complement, which is widely used, you simply look at the most significant bit.

这篇关于如何知道如果一个二进制数重新presents负数？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！