Swift – Hello World Program

Last Updated : 12 Sep, 2022

Swift is a Programming Language used for developing iOS-based platforms like macOS, apple mobiles, apple iOS Watches, iOS TVs, iOS Keywords, iOS Mouse, and other iOS Software-based Peripherals. This language is almost 80% similar to C and Python languages. Once who is familiar with C and Python languages can easily learn swift language. Swift programming language is easy to use and also a powerful programming language. Swift programming language is highly known for best security programming language in the world. Swift concepts are mostly derived from C and Objective-C Concepts. It is simple and easy to use and provides high security. The syntax of Swift is also very easy to learn. In this article, we will create a simple hello world program in Swift language.

Before getting started, see what are the advantages of using Swift programming

Advantages:

Easy to learn and understand. Not very complex program to code it is easy to learn on the go.
Powerful programming language for building better applications.
Help in designing application UI with library functions.
Long term development support and great community.
Trust and Security

Hello World Program in Swift

We can create a swift program file with .swift extension. To run a swift program we required XCode in our system. If you don’t have one you can use some online compiler which you can find a lot of them with the same XCode features. To create and run a hello world program follow the following steps:

Step 1: Open XCode in your system.

Open-XCode

Step 2: Create a new XCode project.

Create-a-new-XCode-project

Step 3: Select the command-line tool and then click on the Next button.

Select-the-command-line-tool

Step 4: Give a name to your project like here we give “helloworld” and then click on next button.

Give-name-to-you-project

Step 5: Select the project location and then click on the create button. Now the project is created.

Select-the-project-location

Step 6: Now open main.swift file in the project navigator.

Open-main.swift-file

Step 7: Enter the following code in the main.swift file.

Swift

import Foundation
print("Hello, World!")

Explanation: In the first line we use the import keyword to import namespaces that contain a set of predefined symbols or functions. So using the namespace we can easily access them. And in the second line we are using a print(“”) function for printing Hello World! as program output.

Step 8: Now press the Run button to run the main.swift file and you will get the following output:

Press-the-Run-button Final-output