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The char type is used to store the integer value of a member of the representable character set. That integer value is the ASCII code corresponding to the specified character.
Character values of type unsigned char have a range from 0 to 0xFF hexadecimal. A signed char has range 0x80 to 0x7F. These ranges translate to 0 to 255 decimal, and –128 to +127 decimal, respectively. The /J compiler option changes the default from signed to unsigned.
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