error message with frequency counter library

|500x380

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
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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)

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

thank you please any link to download frequency counter library

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.