Re: [cc65] scanf alternative?

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From: Ullrich von Bassewitz (uz_at_musoftware.de)
Date: 2003-11-21 19:09:33 

On Fri, Nov 21, 2003 at 12:19:46PM -0500, Raj Wurttemberg wrote:
> What is the alternative for the following statement in cc65:?
>
> scanf("%d", &num);
>
> I found it in stdio.h but it was...
>
> /* Not available or testing: */
> int scanf (const char* format, ...);

The guts of all the scanf functions exist, but they cannot work on files,
since the current file implementation has no working ungetc(). An alternative
is to use sscanf, which works on strings:

    char buf [64];
    int foo;

    if (fgets (buf, sizeof (buf), stdin) != 0) {
        sscanf (buf, "%d", &foo);
    } else {
        Error ("Cannot read from stdin!");
    }

BTW: fgets seems to be broken in the snapshot, but above code works with
2.9.3.

Regards


        Uz


-- 
Ullrich von Bassewitz                                  uz_at_musoftware.de
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