C Standard Library

C <wctype.h> - iswpunct() Function

The C <wctype.h> iswpunct() function is used to check if the given wide character is a punctuation character. In the default "C" locale, a punctuation character are all those graphic characters (as in iswgraph() function) which are not alphanumeric (as in iswalnum() function).

Other locales may consider a different selection of wide characters as punctuation characters.


int iswpunct ( wint_t ch );               


ch Specify the wide character to be checked, casted to an wint_t, or WEOF.

Return Value

Returns non-zero value (i.e, true) if ch is a punctuation character, else returns zero (i.e, false).


The example below shows the usage of iswpunct() function.

#include <stdio.h>
#include <wchar.h>
#include <wctype.h>
int main (){
  wchar_t str[50] = L"Hello, World!";

  //replacing all wide punctuation 
  //characters with @ in str
  int i = 0;
  while(str[i]) {
      str[i] = L'@';

  //displaying the output
  printf("str contains: %ls", str);
  return 0;

The output of the above code will be:

str contains: Hello@ World@

❮ C <wctype.h> Library