[Info-vax] Significance of 2020 / 2021 date

[Arne Vajhøj]

On 1/9/2021 8:38 AM, Bill Gunshannon wrote:
> 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)

That code makes little sense.

The original code as already noted do a skip of DDMMM.

>> 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.

char* + int is char*. atoi expects char*. Why should it complain?

Arne