Eager to develop your own application for the iPhone and don't know where to start from? Well this article may help you out a bit.
Xcode is an Integrated Development Environment or IDE created by Apple for the development of iOS applications. It contains a suite of software development tools used for developing OSX and iOS softwares.
The first version of the Xcode was released in 2003 and since then Apple has just improved it's IDE with the time. It is available at the Mac App Store free of charge. You can also download it's previous versions and preview releases from the Apple Developer website but for that you should be a registered Apple Developer.
The Xcode includes editors, compilers and other necessary tools required to facilitate the development. It supports development for Apple devices uncluding Macs, iPhones and iPads.
It is developed best for use as a single window interface and it's an excellent for version control either using Git or Subversion. It can also build universal binaries which allow softwares to run on PowerPC and Intel based platforms that includes both 32-bit and 64-bit code.
You can also directly upload your app for release to the App Store from your Xcode. Xcode only runs on MAC OS that means you need to have either Macbook, iMAC or MacMini to build your applicatiopn for the Apple OS. It also provides many security features as you have to upload production certificates and signing certificates before releasing your app on the App Store.
Xcode uses Swift as it's language for development. Swift is a very simple language with the features of almost all the languages present currently. It works on the principle of OOPs. The latest version of Xcode is Xcode 9.2 which uses the updated Swift 4 as it's language for development.