Gets the length and determines the validity of a multibyte character.

#include <stdlib.h>

int mblen (const char *mbstr, size_t count);

Parameters

mbstr

A pointer to a sequence of bytes (a multibyte character) to check.

count

The number of bytes to check.

Return Values

• The length, in bytes, of the multibyte character.
• 0 if mbstr is a null pointer or the object that it points to is the wide-character null.
• -1 if the object that mbstr points to does not form a valid multibyte character within the first count characters, up to MB_CUR_MAX.

Requirements

See Also

mbstowcs, mbtowc, wcstombs, wctomb