error message with frequency counter library

Using Arduino Programming Questions
1

dear
above code to calculate anemometer wind speed using frequency counter library ,i receive below error message

windspeedcode2:15: error: 'FreqCount' is not a class, namespace, or enumeration

 FreqCount::f_comp= 8;             // Set compensation to 12

 ^

windspeedcode2:16: error: 'FreqCount' is not a class, namespace, or enumeration

  FreqCount::start(100);            // Start counting with gatetime of 100ms

  ^

windspeedcode2:17: error: 'FreqCounter' has not been declared

  while (FreqCounter::f_ready == 0)         // wait until counter ready

         ^

windspeedcode2:19: error: 'FreqCount' is not a class, namespace, or enumeration

  freq=FreqCount::f_freq;//read frequency value

       ^

exit status 1
'FreqCount' is not a class, namespace, or enumeration

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
2

You are using the FreqCount library incorrectly (in fact, I don't think that syntax is valid outside of a class definition...). See the documentation/examples that come with it. You didn't post a link to where you got it (ideally the github so we can see the code w/out downloading anything), so I couldn't help further.

Note that the name of a library is insufficient to identify what library you're using. There are often many versions of a library with subtle (or not so subtle) differences, but the same name, thanks in part to how easy github makes it to fork a repo (often these forks don't even change the readme)

3

Please don't post pictures of code, post it in code tags directly in your post

4

thank you
please any link to download frequency counter library

5

saif221984:
thank you
please any link to download frequency counter library

You seem to have done that. Mr. Google CAN help you, if you haven't.

6