High Quality Content by WIKIPEDIA articles! There are a variety of ways that ?1 (and negative numbers in general) can be represented in computer systems, the most common being as two's complement of their positive form. Since this representation could also represent a positive integer in standard binary representation, a programmer must be careful not to confuse the two. Negative one in two's complement could be mistaken for the positive integer 2n ? 1, where n is the number of digits in the...
High Quality Content by WIKIPEDIA articles! There are a variety of ways that ?1 (and negative numbers in general) can be represented in computer systems, the most common being as two's complement of their positive form. Since this representation could also represent a positive integer in standard binary representation, a programmer must be careful not to confuse the two. Negative one in two's complement could be mistaken for the positive integer 2n ? 1, where n is the number of digits in the representation (that is, the number of bits in the data type). For example, 111111112 (binary) and FF16 (hex) each represents ?1 in two's complement, but represents 255 in standard numeric representation.
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