What is the purpose of 'package main' in a Go program?

The package main declaration in a Go program serves a specific purpose:

• It indicates that the file is part of the main package, which is required for creating an executable program in Go.
• When you compile and run a Go program, the Go runtime looks for the main package to find the entry point of the application, specifically the main function.

In summary, package main is essential for defining a standalone executable program in Go.