Oct 2019
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venusflytrap
Oct '19

Please have a look at this simple code and its output :

Screenshot (33)
Screenshot (33).png1920x1080 241 KB

L is supposed to be 16 when the for loop ends in both cases. I have verified this on my local g++ compiler.

Here, it stops at a random value of L in the first case, every time this code is run. It is as if the condition L < 16 was ignored and the for loop continued until String[L] != '_' became false.

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    Oct '19

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    Oct '19
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simes
Oct '19
1

If this is a bug, it’s a bug in the C++ compiler, not Spoj or IdeOne. I don’t think Sphere Labs will be fixing the compiler, although they may install a later version if there is one.

Edit: perhaps report it to GCC in Bugtracker2.

simes
Oct '19

I think this comes under the definition of “undefined behaviour”. I.e. accessing an element outside the bounds of an array, namely String[16], when String is only 16 elements long.