iscntrl()

IMPORT_C int iscntrl(int c);

Description

Tests whether the character is a control character. For Unicode, the function returns TRUE for all characters in the categories: ECcCategory, ECfCategory, ECsCategory, ECoCategory and ECnCategoryCc.

Parameters

int c an integer whose value is representable as an unsigned char.

Return value

int True, if the character is a control character; false, otherwise.