So, what's a main() function?

It's the only function we can have in a programIt's the entry point of a programIts only job is to return 0It's an essential part of every C++ program

Great! The main() function is the entry point of a program. It's essential in every C++ program and has many purposes beyond returning 0.

So close! The main() function is the entry point of a program. It's essential in every C++ program and has many purposes beyond returning 0.