Hello World

Part of the Fundamentals section of Coddy's GO journey — lesson 2 of 109.

The "Hello, World!" is a simple program that outputs Hello, World! to the screen.

In Go, we use Println() to show words on the screen. The words go inside quotation marks.

Let's take a look at the "Hello World!" program in Go:

fmt.Println("Hello, World!")

Challenge

Beginner

Use the code view to write a program that outputs Hello, World!

Note that anything inside quotation marks is case sensitive. For example:
fmt.Println("Hello, World!")
fmt.Println("hello, world!")
are different things (notice the capital letters in the first line).

Cheat sheet

To print in the console use fmt.Println():

fmt.Println("Hello, World!")

Try it yourself

package main
import ("fmt")

func main() {
	// TODO: Use fmt.Println() to print "Hello, World!" below
	
}

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Fundamentals

2Variables and Basic Data Types

What is a variable Type Inference with `:=`Integers (int)Floating-Point Numbers Booleans Strings Zero Values Constants Naming Conventions Recap - Variables and Types

5Basic Input/Output

Formatted Output Format Verbs Printing Types Getting Basic User Input Recap - Input and Output

8Functions

Understanding Functions Declaring a Function Calling Functions Function Parameters Returning a Single Value Returning Multiple Values Named Return Values Function Scope Basics Recap - Creating Reusable Code

11Composite Types: Slices

Introduction to Slices Declaring Slice Literals Creating Slices with `make`Slice Length vs Capacity Accessing Slice Elements Appending Elements Slicing Existing Slices/Arrays Iterating Over Slices Copying Slices Recap - Dynamic Lists

14Basic Error Handling

The Concept of Errors The `error` Interface Functions Returning Errors Checking for Errors Creating Simple Errors Creating Formatted Errors Basic Error Handling Recap - Handling Problems