c++ union and intersection

Define a set a with certain values, like 1, 2, 3, 4 and set b with certain values like 3, 4, 5, 6

Have main create three objects: setA with set a, setB with set b, and setC with set a.

Print the setA, setB, setC

Do an union of setA with setB (setA will be changed) then print setA

Do an intersection of setC (setC will be changed) with setB then print setC

unionOps, that takes a Sets object and does a union with the current set

intersection, that takes a Sets object and does an intersection with the current set

printSet, will print the Sets object contents