Define a class called StringSet that will be used to store a set of strings. Use a vector to store the strings. All strings in the set must be unique (i.e., no duplicates). Requirement: - constructor:...

Define a class called StringSet that will be used to store a set of strings. Use a vector to store the strings. All strings in the set must be unique (i.e., no duplicates).   Requirement: - constructor: an empty constructor. - constructor: a constructor that takes in a string array (and its size), use the values inside array to initialize the StringSet object.  - constructor: a constructor that takes in a string vector, use the values inside vector to initialize the StringSet object. - member function: void add(string str), which adds str to the set.  - member function: void remove(string str), which removes str from the set.  - member function: void clear(), which clears all string sfrom the set.  - member function: int size(), which returns the count of number of strings in the set.  - member function: void union(const StringSet& ss), which unions with strings in ss.  - member function: void intersect(const StringSet& ss), which intersects with strings in ss.  - member function: void print(), which prints all strings in the set.  - main(): test all constructors and member functions in main().  - makefile: provide makefile for your solution - separate interface(.h) and implementation(.cpp)  File structures and names: - stringset.h: class StringSet interface - stringset.cpp: class StringSet implementation - test.cpp: contains main() and tests all constructors and member functions.  - makefile: contains compile instructions for make.   Grading:  - compilable and meaningfull attemps: 20% - StringSet class: 50% - test and main(): 20% - comment, indentation and file names and makefile: 10%