size_t len = (src_size < dst_size) ? src_size : dst_size; memcpy (dst, src, len); // or memmove dst[len-1] = 0; So not fills unecesary 0's and it's muc

size_t len = (src_size < dst_size) ? src_size : dst_size; memcpy (dst, src, len); // or memmove dst[len-1] = 0; So not fills unecesary 0's and it's much more faster that any str?cpy