| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
| C Library | both |
#include <collate.h>
int cclass(char *class, collel_t **list);Finds all the collating elements of the class, class. The list is updated to point to the array of collating elements found. The list is valid until the next call to setlocale().
The function supports user-defined character classes. In C Library programs, the function also supports POSIX.2 character classes.
If successful, cclass() returns the number of elements in the list pointed to by list.
If the first argument specifies a class that does not exist in the LC_CTYPE category of the current locale, cclass() returns -1.
⁄* CELEBC02 *⁄
#include <stdio.h>
#include <collate.h>
int main(void)
{
collel_t *list; ⁄* ptr to the digit class collation weights *⁄
int weights; ⁄* no. of class collation class weights found *⁄
int i;
weights = cclass("digit", &list);
printf("weights=%d\n", weights);
for (i=0; i<weights; i++)
printf("*(list + %d) = %d\n", i, *(list + i) );
}