signed vs unsigned char

[sreemoorthy]

if Char is used for representing ASCII symbols, what is the significance of having a signed and unsigned 'char'?. does a signed and unsigned char point to a different symbol or the same symbol?. if they both represent the same symbol why the extra keyword usage?

[streetdogg]

if Char is used for representing ASCII symbols, what is the significance of having a signed and unsigned 'char'?

char is used to save the number associated with a character as per the ASCII table.

does a signed and unsigned char point to a different symbol or the same symbol?.

1. only positive numbers point to a symbol. The ASCII table has only 128 entries - https://www.cs.cmu.edu/~pattis/15-1XX/common/handouts/ascii.html
2. The negative numbers don't represent any symbol.