Swift hello world - Swift

Swift is a powerful and intuitive programming language developed by Apple for iOS, macOS, watchOS, and tvOS. In this article, we will introduce the basics of Swift by writing a "hello world" program.

Setting up Swift

Before getting started with Swift, you need to install Xcode, which is the IDE (Integrated Development Environment) for macOS that includes everything you need to develop, test, and optimize your Swift apps. You can download Xcode from the Mac App Store or from the Apple Developer website.

Once Xcode is installed, open it and click on "Create a new Xcode project". Choose "Command Line Tool" from the list of options, and then select "Swift" as the language for your project. Choose a name for your project and a save location, and click "Create".

Writing the "hello world" program

Now that we have set up our project, let's write the "hello world" program. In Swift, the "hello world" program is very simple. Here is the code:

print("Hello, world!")

The print() function is used to output text to the console. In this case, we are printing the string "Hello, world!".

Running the program

To run the "hello world" program, click on the "Run" button in Xcode or use the keyboard shortcut "Command + R". You should see the text "Hello, world!" printed in the console.

Congratulations, you have just written and run your first Swift program!

Conclusion

Swift is a versatile and powerful programming language that is easy to learn and use. In this article, we have introduced the basics of Swift, including how to set up a project and write a "hello world" program. With these foundations, you can go on to build your own Swift applications for iOS, macOS, watchOS, and tvOS.