1) What is the key characteristic of a functions? 2) What facts of reality give rise to the need to create functions? 3) What are the 4 ways to set up a function? 4) What are user defined function? 5) Where can you place a function definition ? 6) What is a function argument? 7) What are the 3 key features of function arguments? 8) What is a function prototype? 9) What does a #include statement do ? 10) Find a website online that has a list of C++ predefined functions