strrpbrk

The strrpbrk function searches string for the last occurrence of any character from set. The null terminator is not included in the search.

The strrpbrk function returns a pointer to the last matching character in string. If string contains no characters from set, a null pointer is returned.

strchr, strcspn, strpbrk, strpos, strrchr, strrpos, strspn

#include <string.h>
#include <stdio.h> /* for printf */

void tst_strrpbrk (void) {
  unsigned char vowels [] ="AEIOUaeiou";
  unsigned char text [] = "American National Standards Institute";
  unsigned char *p;

  p = strpbrk (text, vowels);

  if (p == NULL)
    printf ("No vowels found in %s\n", text);
  else
    printf ("Last vowel is at %s\n", p);
}