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I am trying to understand how char data type stores characters. The size of char data type is 1 byte, which means that the compiler can store a maximum of 255 characters.
ASCII Table show 0 to 255 values
ASCII Table - ASCII codes,hex,decimal,binary,html
unsigned defined between 0 to 256
signed defined between -127, 0, 128
What I am trying to find here is what characters are stored in the range of 0 to -127. This table does not show the character list for range -127 to 0
The char data type is not defined as either signed as unsigned. It's implementation defined whether it's signed or unsigned by default.
And ASCII defines only 128 characters (0 through 127). There are a number of 8-bit character sets (some people call them "extended ASCII" since they contain the same 128 characters plus 128 more characters, but they are not actually ASCII) that define characters above 127. For example, ISO8859 or the old-school MSDOS "code pages" or Windows-1252.
But most commonly these days you'll find UTF-8 which is a variable-length encoding (from 1 to 4 bytes per character); the way UTF-8 is designed, all valid ASCII text is also valid UTF-8 text.
Standard ASCII is a 7-bit code so is only defined for 0 to 127. The high bit is used as a parity bit.Quote:
Originally Posted by king12
Extended systems can define values for 128 to 255.
You mean 0 to 255.Quote:
Originally Posted by king12
You mean -128 to +127 for the common 2's complement representation (although the standard only requires -127 to +127).Quote:
Originally Posted by king12
You mean -128 to -1, but the values -128 to -1 share the same bit pattern as the values 128 to 255. Look up 2's complement representation.Quote:
Originally Posted by king12