[C-prog-lang-l] Testing input issue

[Jura Pelc]

In basic I have this cycle:

while(1)
{
          char str[MAX_COMMAND_LENGTH + 1];
          fgets(str, MAX_COMMAND_LENGTH + 1, stdin);
}
cmd is: echo '1p' | ./app Small.txt
and output is:

49 112 10Lorem ipsum dolor sit amet consectetuer eu Praesent dui libero
Donec. Enim diam lobortis risus nec tempus tortor a Curabitur adipiscing
Duis.
 49 112 10Lorem ipsum dolor sit amet consectetuer eu Praesent dui libero
Donec. Enim diam lobortis risus nec tempus tortor a Curabitur adipiscing
Duis.
 49 112 10Lorem ipsum dolor sit amet consectetuer eu Praesent dui libero
Donec. Enim diam lobortis risus nec tempus tortor a Curabitur adipiscing
Duis.
 49 112 10Lorem ipsum dolor sit amet consectetuer eu Praesent dui libero
Donec. Enim diam lobortis risus nec tempus tortor a Curabitur adipiscing
Duis.
 49 112 10Lorem ipsum dolor sit amet consectetuer eu Praesent dui libero
Donec. Enim diam lobortis risus nec tempus tortor a Curabitur adipiscing
Duis.
... infinite


These numbers are chars in str
It looks like the input is cycling or the buffer counter not moving.

čt 6. 6. 2019 v 9:26 odesílatel Vladimír Kotal <vlada at devnull.cz> napsal:

> In general there should not be much difference modulo buffering however
> that should not impact the outcome.
>
> How exactly do you test for end of input ?
>
>
> V. Kotal
>
> Dne st 5. 6. 2019 23:13 uživatel Jura Pelc <jirik.pelc1998 at gmail.com>
> napsal:
>
>>
>> Hi,
>> I finished coding Ed Phase 1. I thing (I hope) I have done everything
>> according to task. Today I want to start testing and found one issue.
>> The first test ended in infinite loop. I found, then the application
>> infinitely reading input a executing it.
>> When the same input is used in running application it is fine.
>>
>> I have these construct to gen input
>>                 fgets(str, MAX_COMMAND_LENGTH + 1, stdin);
>> And command is:
>>                 1p
>> I let app to print me chars and in both situations it is 49, 112, 10
>> So newline char is here and fgets should stop at new line
>>
>> So my question is: *What is difference between standard input directly
>> from console and send by pipe?*
>>
>>
>> --
>>
>> S pozdravem Jiří Pelc
>> Matematicko-fyzikální fakulta
>> Univerzita Karlova
>> _______________________________________________
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>>
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-- 

S pozdravem Jiří Pelc
Matematicko-fyzikální fakulta
Univerzita Karlova
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