Q4: Continue with Word class: a) Copy the previous program to a new file. b) Overload the operator + to output Word objects, with auto conversion. c) Overload the operator * to output Word objects. Class template (complete following function): class Word{ friend Word operator+ friend Word operator friend Word operator } Use following main() to test your class. int main(( Word a("abc"),b("def"); string c = "ghi"; cout