Manual Pages  — MEMCCPY

memccpy – copy string until character found

LIBRARY SYNOPSIS DESCRIPTION SEE ALSO STANDARDS HISTORY

Standard C Library (libc, -lc)

#include <string.h>

void *
memccpy(void * restrict dst, const void * restrict src, int c, size_t len);

The memccpy() function copies bytes from string src to string dst. If the character c (as converted to an unsigned char) occurs in the string src, the copy stops and a pointer to the byte after the copy of c in the string dst is returned. Otherwise, len bytes are copied, and a NULL pointer is returned. If src and dst overlap, behavior is undefined.

The memccpy() function conforms to IEEE Std 1003.1-2004 ("POSIX.1") and ISO/IEC 9899:2024 (“ISO C23”).

The memccpy() function first appeared in BSD 4.4 and was first specified in the System V Interface Definition, First Edition (“SVID1”). The restrict keyword was added to the prototype in FreeBSD 5.0.0 in accordance with the updated specification of IEEE Std 1003.1-2004 ("POSIX.1").