strspn() - span a string
#include <string.h>
size_t strspn (const char *s, const char *charset)
The strspn(3) function spans the initial part of the null-terminated string s as long as the characters from s occur in string charset.
The strspn(3) function returns the number of characters spanned.
memchr(3)
strchr(3)
strcspn(3)
strpbrk(3)
strrchr(3)
strsep(3)
strstr(3)
strtok(3)
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at webmaster@systemmanager.forsenergy.ru to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.