But there are user programming languages for the iPad in the iOS App store, such as several Basic interpreters (the same user programming language that came with the original IBM PC and the Apple II+). Or a user could program and run Javascript in Safari on their iPad or iPhone.
But very few PC users actually know how to program. They usually just buy and install software applications. Desktop, laptop, or iPad.
you cant write ipad apps on an ipad. You need a PC for that. You cant change the operating system without a PC. Hell you cant even move files around without a PC.