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Hello, World!

Writing the "Hello, World!" Program​

Write the Code: Open main.go in your favorite text editor and add the following code:

package main

import "fmt"

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

Explanation of the Code​

  • package main: This line declares that the file belongs to the main package. Every Go application must have a main package.
  • import "fmt": This line imports the fmt package, which contains functions for formatted I/O, including printing to the console.
  • func main() { ... }: This line defines the main function, which is the entry point of a Go program. When the program is run, the code inside the main function is executed.
  • fmt.Println("Hello, World!"): This line calls the Println function from the fmt package to print the string "Hello, World!" to the console.

Running the Program​

To run your "Hello, World!" program, open a terminal, navigate to the directory containing main.go, and execute the following command:

go run main.go

You should see the following output:

Hello, World!

Congratulations! You've successfully written and run your first Go program.

Next Steps​

Now that you've got a basic understanding of Go, you can explore more features and concepts:

  • Variables and Data Types: Learn how to declare and use variables in Go.
  • Control Structures: Understand how to use loops and conditional statements.
  • Functions: Discover how to define and call functions in Go.
  • Packages and Modules: Learn about organizing code and managing dependencies.

Happy coding!