ungetc/scanf independent?

[cspw rures]

I have a VAX problem when interleaving calls to getc and ungetc with
calls to scanf.   On all the compilers I tested (except the VAX VMS 4.2),
and "ungetc" character is available to a subsequent scanf.  On the VAX
it appears that getc and ungetc have their own private "view" of the file,
not shared by scanf.
 
Is the VAX C compiler broken?   What does ANSI say?
 
     #include <stdio.h>
 
     int main(void)
     {  char c; int i;
        c = getc(stdin);
        ungetc(c,stdin);
        scanf("%d",&i);
        printf("%d\n",i);
     }
 
For test data like
123
the VAX prints 23.
 
Thanks
Pete Wentworth



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