Define ISDIGIT and use it instead of isdigit.
#include <stdio.h>
#include <ctype.h>
-#ifdef STDC_HEADERS
-#define ISLOWER islower
-#define ISUPPER isupper
-#else
-#define ISLOWER(c) (isascii ((c)) && islower ((c)))
-#define ISUPPER(c) (isascii ((c)) && isupper ((c)))
+
+#ifndef isascii
+#define isascii(c) 1
#endif
+
+#define ISLOWER(c) (isascii (c) && islower (c))
+#define ISUPPER(c) (isascii (c) && isupper (c))
+#define ISDIGIT(c) (isascii (c) && isdigit (c))
+
#include <sys/types.h>
#include <signal.h>
#include "system.h"
register int temp;
register char *p = str;
- while (isdigit (*p))
+ while (ISDIGIT (*p))
{
n = n * 10 + *p - '0';
p++;