How to Create Console Programs Using Go? 🐹

To create a console program with Go we mainly need to know 3 things:

• Get data entered by the user
• Process the information
• Print the processed information to the console

Now that we know what we need to know, let's begin step by step.

1. Getting user data from the console

In Go we'll use the standard library to get the user's information entered via keyboard to the console. We must declare our variable and its type in advance.

~

fmt.Println("Enter your name:")
var Name string
fmt.Scanln(&Name)

2. Processing the information

We'll use a layered architecture to process our information obtained through the console.

Inside the services folder we'll have all the services where we'll process the information. This will communicate with the controllers and with the database layer.

3. Print to console

In Go there's the "fmt" package which will help us print information to the console in our program. Let's look at 3 ways.

• Println : Prints and inserts a line break
• Print : Prints the provided information
• Printf : Prints with formatting

~

name := "Carlos"

fmt.Print("Welcome")
fmt.Println("Hello I have a line break")
fmt.Printf("My name is: %s", name)

With these basic concepts for building a console program and with basic programming concepts, we can start our project where we'll create our own travel planner.