getpwent
if ((pw = getpwent()) == NULL)
struct passwd *getpwent(void);
PROTO_DEPRECATED(getpwent);
while ((pwd = getpwent()) != NULL && text[0] == pwd->pw_name[0]
while ((pw = getpwent()) != NULL) {
while ((pw = getpwent()) != 0)
while ((pw = getpwent()) != NULL) {
} else while ((pw = getpwent()) != NULL)
while ((pw = getpwent()) != NULL)
while ((pw = getpwent()) != 0)