iscntrl

Tests if a character is a control character.

int iscntrl (int c);

Required Header
<ctype.h>

Return Value

This function returns a non-zero value if the character is a control character.

Parameters

c

  The character to be tested

Char Type

See Also    isalnum, isalpha, isblank, isdigit, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit