static intnum_len(long long n) { intlen; len = 0; if (n < 0) { ++len; n *= -1; } else if (n == 0) return (1); while (n != 0) { ++len; n /= 10; } return (len); } static char*storage_num(long long n, char *result) { if (n / 10 != 0) result = storage_num(n / 10, result); *result++ = n % 10 + '0'; *result = '\0'; return (result); } char*itoa(int n) { char*result; long longnb; size_tsize_nb; nb = (lo..

intisprint(int c) { if (c >= 0x20 && c < 0x7f) return (1); return (0); }

intisascii(int c) { if (c >= 0x00 && c

intisalpha(int c) { if ((c >= 0x41 && c = 0x61 && c

intisalnum(int c) { if ((c >= 0x30 && c = 0x41 && c = 0x61 && c