Question: Add a function int countPrimes(int a, int b); that returns the number of prime numbers in the interval a x b. Change the main function

Add a function int countPrimes(int a, int b); that returns the number of prime numbers in the interval a x b. Change the main function to test the new code.

Please, it needs to be a function above/before the main function and it is necessary to use the given names. Thanks

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