function
<cwctype>

iswcntrl

int iswcntrl (wint_t c);
Check if wide character is a control character
Checks whether c is a control character.

A control character is a character that does not occupy at least one printing position on a display (this is the opposite of a printable character, checked with iswprint).

This function is the wide-character equivalent of iscntrl (<cctype>): If c translates with wctob to a character for which iscntrl is true, it is always considered a control character by this function too.

In C++, a locale-specific template version of this function (iscntrl) exists in header <locale> for all character types.

Parameters

c
Wide character to be checked, casted to a wint_t, or WEOF.
wint_t is an integral type.

Return Value

A value different from zero (i.e., true) if indeed c is a control character. Zero (i.e., false) otherwise.

Example

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/* iswcntrl example */
#include <stdio.h>
#include <wctype.h>
int main ()
{
  int i=0;
  wchar_t str[] = L"first line \n second line \n";
  while (!iswcntrl(str[i]))
  {
    putwchar (str[i]);
    i++;
  }
  return 0;
}


Output:
First line

See also

iscntrl
Check if character is a control character (function )
iswgraph
Check if wide character has graphical representation (function )
iswpunct
Check if wide character is punctuation character (function )
iscntrl (locale)
Check if character is a control character using locale (function template )