iscntrl - Test for control character

Definition	#include <ctype.h> int iscntrl(int c); iscntrl checks whether the character c from is a control character. Control characters are non-printable characters (e.g. for printer control). The non-printable characters for white space are not included (see isspace).
Return val.	!= 0 0	c is a control character. c is not a control character.
Note	iscntrl is implemented both as a macro and as a function (see section “Functions and macros”).
Example	#include <ctype.h> #include <stdio.h> int main(void) { int c; while((c = getchar()) != EOF)     printf("%s : %c\n", ((iscntrl(c)) ? "Control character":"Other"), c); return 0; }
See also	isalnum, isascii, isalpha, isdigit, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit, isebcdic, iswcntrl