I want to know compilar version of my smart contract.(https://i.stack.imgur.com/6K5sM.png)

  • How did you compile your contract? – Ismael Sep 23 '17 at 5:20

In your code, you have mentioned the version as 0.4.9. The compiler will you this version to compile your code. If your system compiler version was lesser than 0.4.9 then it will throw an error.

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