ispunct

Character classification macro.

Defined in header <ctype.h>

Syntax

#include <ctype.h>
int ispunct(int c);

Portability

Remarks

ispunct is a macro that classifies ASCII-coded integer values by table lookup. It is a predicate returning nonzero for true and 0 for false. It is defined only when isascii(c) is true or c is EOF.

You can make this macro available as a function by undefining (#undef) it.

Return value

ispunct returns nonzero if c is a punctuation character (iscntrl or isspace).

Example

#include <ctype.h>
#include <stdio.h>

int main (void)
{
   char c =  'C ;
   if (ispunct (c))
      printf("%c is a punctuation  character\n",c);
   else
      printf("%c isn't a punctuation  character\n",c);
   return 0;

Differences from modern implementations

Nothing recorded yet.

Modern references

• cppreference (search)
• POSIX (search)
• Microsoft C runtime (search)

These are search links, not yet checked by hand.

Stable link: /3.1/ctype.h/ispunct/ · short form /3.1/ispunct/