Naithani's blog

Why std::cout gave me runtime error?
By Naithani, history, 6 years ago, In English

I was solving a problem on LightOj, my solution was correct but the problem was in the std::cout, then I replaced it to printf, then It worked fine. Plz anyone reply, why this happened.

solution without cout: link

Thanks in advance :)

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6 years ago, hide # |
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Your submissions are inaccessible because LightOJ isn't letting me view them. Could you post your code here in a spoiler? In any case, I'm pretty sure changing just printf to cout is not the only cause of RTE.

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6 years ago, hide # |
 
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Can you post the code in a spoiler?

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Auto comment: topic has been updated by Naithani (previous revision, new revision, compare).

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I guess you mixed printf with std::cout having sync_with_stdio(false) called.

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    6 years ago, hide # ^ |
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    Nops, I have tried approx all combo, remove/ included, that's why it causes me 20+ runtime errors... I can't think of this could happen. I think there is something weird with the lightOj C++ compiler may be old or something else.

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      6 years ago, hide # ^ |
       
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      Does using cout in both main() and solve() work?

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        6 years ago, hide # ^ |
         
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        cout using in main() does not give me run time error, but in solve() it gives run time error. I did not check the whole solution in main().

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          6 years ago, hide # ^ |
           
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          Now I tried, without using solve() and I wrote all the content in main() but still go run time error.

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            6 years ago, hide # ^ |
             
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            Try your solution with cout but without ios_base::sync_with_stdio(false); cin.tie(nullptr);.

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