vamaddur's blog

C++ Code With "index" Variable Name CTEs on All Online Judges, But Not on PC
By vamaddur, history, 6 years ago, In English

When I name a variable "index" in my C++11 code, it successfully compiles with MinGW in CodeBlocks on my PC.

Picture Proof #1

However, on any online compiler/IDE (in this case, Ideone), I get a compile-time error.

Picture Proof #2

How can I make my compiler and/or IDE identify reserved words and prevent me from using them by accident?

I know it's a minor problem, and I could easily circumvent it by "misspelling" variable names (as I am doing now; e.g. prevy instead of prev), but I would still like to fix it.

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6 years ago, # |
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Auto comment: topic has been updated by vamaddur (previous revision, new revision, compare).

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6 years ago, # |
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see https://linux.die.net/man/3/index .

#define index index________

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6 years ago, # |
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probably some library in the header is using the same variable/function name, just define the name as some random garbage at the start of the code

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    6 years ago, # ^ |
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    i clicked on this post expecting to comment the same thing again but i discovered me from 8 months ago already did the job

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6 years ago, # |
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There was similar problem with read variable: http://codeforces.com/blog/entry/46466

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6 years ago, # |
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Simply no using namespace std;

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