#include <ctype.h>
int iscntrl (char c);- DESCRIPTION
-
The iscntrl function tests c to determine if it is a control character (0x00-0x1F or 0x7F).
- RETURN VALUE
-
The iscntrl function returns a value of 1 if c is a control character and a value of 0 if it is not.
- SEE ALSO
-
isalnum, isalpha, isdigit, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit
- EXAMPLE
link:src/iscntrl.c[role=include]- OUTPUT
$ gcc -Wall iscntrl.c $ ./a.out iscntrl (30) YES iscntrl (31) YES iscntrl (32) NO iscntrl (33) NO