wcstombs(3) Library Functions Manual wcstombs(3) wcstombs - (libc -lc) #include size_t wcstombs(size_t dsize; char dest[restrict dsize], const wchar_t *restrict src, size_t dsize); dest wcstombs() src dest. dsize dest. dest . : o ( ). (size_t) -1. o . dest . o (L'\0'). . dest ('\0'). dsize dest. dest dsize . 2 dsize wcstombs(NULL,src,0)+1. wcstombs() . (size_t) -1. attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |wcstombs() | | MT-Safe | +------------+------------------------------------+--------------------+ wcsrtombs(3) . C11, POSIX.1-2008. POSIX.1-2001 C99. wcstombs() LC_CTYPE . mblen(3), mbstowcs(3), mbtowc(3), wcsrtombs(3), wctomb(3) 3 . . : . 6.18 8 2026 wcstombs(3)