main function

The main function is the entry point of a program in many programming languages—the code that runs first when execution begins.

In C and C++, it's written as int main() or int main(int argc, char *argv[]).

In Python, the convention if __name__ == "__main__": serves a similar purpose, though Python doesn't require it.

The main function typically initializes the program, calls other functions, and returns an exit code to the operating system.