Write a complete C$++$ program with the two alternate functions specified below, of which each simply triples the variable count defined in main function. Then compare and contrast the two approaches. These two functions are: a$)$ Function tripleByValue that passes a copy of count by value, triples the copy and returns the new value. b$)$ Function tripleByReference that passes count by reference via a reference parameter and triples the original value of count through its alias $($i$.$e$,$ the reference parameter$).$ Hint: Use the function pow by importing the cmath library.