[Info-vax] Significance of 2020 / 2021 date

[Bill Gunshannon]

On 1/9/21 8:27 AM, Bill Gunshannon wrote:
> On 1/9/21 7:35 AM, Andy Burns wrote:
>> Chris wrote:
>>
>>> issinoho wrote:
>>>
>>>> if (atoi (date_string + 5)>  2020)
>>>
>>> That code is type unsafe for starters. atoi() requires an ascii string,
>>> but you are trying to add 5 decimal to an ascii string ?. 
>>
>> atoi requires a *pointer* to an asciiz string, presumably in this case 
>> the format is something like DDMMMYYYY, so that the +5 starts the 
>> decimal conversion from the address of the first Y.
>>
> 
> Am I the only one who things this was fat fingered and the example
> should really be: if ((atoi (date_string) + 5) >  2020)
> 
> I would have expected the original to generate an error at compile
> time.
> 

OK, it made me curious enough that I tried a few examples.  Apparently
the compiler (at least gcc) doesn't really care what you throw at the
call to atoi().  Interesting to say the least.

bill