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iscntrl | Function (Macro) |
ctype.h |
short iscntrl (short c); |
Checks whether a character is a control character.
iscntrl returns nonzero if c is a TIOS control character, otherwise it returns zero. Note that in TIOS control characters are reduced to the range from 0x00 to 0x0D. iscntrl is a simple macro.