a. The increment and relational operators in the class clockType are overloaded as member functions. Rewrite the definition of the class clockType so that these operators are overloaded as nonmember functions. Also, overload the post-increment operator for the class clockType as a nonmember.
b. Write the definitions of the member functions of the class clockType as designed in part a.
c. Write a test program that tests various operations on the class as designed in parts a and b.