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C: Why range of signed char is -128 to 127 not -127 to 128?

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C: Why range of signed char is -128 to 127 not -127 to 128?
posted Aug 20, 2014 by anonymous

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1 Answer

+2 votes

Most significant bit is one then it identifies a negative number so if you have 8 bits pattern then negative numbers are

10000000 - 11111111 i.e. -128 to -1

and positive numbers are

00000000 - 01111111 i.e. 0 to 127
answer Aug 20, 2014 by Salil Agrawal
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What type of conversion is not accepted in C and why?
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+2 votes

A char can not be a +ve or -ve. last bit is signed bit in accumulator.but not useful for CHAR Whats the purpose? of doing it.

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