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How do I rectify this error? Clearly it says there is some error in the library, so how do I correct it?

C:\Program Files (x86)\Arduino\libraries\SoftwareSerial\SoftwareSerial.cpp:1: error: expected unqualified-id before 'if'

yash jain
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2 Answers2

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As you haven't shown the code that produces the error when it's compiled, I can't say for sure what the problem is. However, here are links to three instances of the same error:

• error: expected unqualified-id before 'if' on stackoverflow

• Arduino: error: expected unqualified-id before 'if' (using ping sensor), also on stackoverflow

• error: expected unqualified-id before 'if' on arduino.cc.

In each case, the problem was due to executable code (as opposed to declarations) appearing outside of a function. You may have put some executable statements outside of loop() or setup(), etc.

Community
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James Waldby - jwpat7
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Your copy of the SoftwareSerial library has become corrupted. Why is anyone's guess: maybe your hard drive is dying?

Replacing the file with a good copy will solve the problem. The simplest way to do that is to reinstall the IDE.

Majenko
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