Go File Structure Explained

package, import, and func

Go files use package declarations to group code, import statements to reuse external libraries, and function definitions to execute logic.

Go files are organized into packages, which group related code and define a namespace; you import other packages to reuse their code and define functions to execute logic.

package main

import "fmt"

func main() {
	fmt.Println("Hello, Go")
}

The package declaration names the current file's group, import brings in external code like fmt, and func defines a named block of executable code.