Juan sees a teal-colored port on the back of a computer. What type of port is this?

If functions must be called to process data, how does int main() get called?

A. You call it in preprocessor directives. B. main() calls itself. C. The operating system knows to look for it. D. that’s what using namespace std does.

When you use GUI components that are already created, you ____________________ objects, each of which belongs to a prewritten class.

Fill in the blank(s) with the appropriate word(s).