rem: wcstombs(s, pwcs, n) char *s; const int *pwcs; size_t n;
add: wcstombs(char *s, const wchar_t *pwcs, size_t n)
context: wcstombs(s, pwcs, n)	char *s;	const int *pwcs;	size_t n;{	int count = 0;	if (n != 0) {		do {			if ((*s++ = (char) *pwcs++) == 0)				break;			count++;		} while (--n != 0);	}	return count;}