What programming languages can one use to develop iPhone, iPod Touch and iPad (iOS) applications?

Question

What programming languages can one use to develop iPhone, iPod Touch and iPad (iOS) applications?

Also are there plans in the future to expand the amount of programm

Answer 1

The programming language of iOS(and Mac OS) is Objective-C and C. You have to use Xcode platform to develop iOS apps, on the next version that is now available on beta release, Xcode 4 supports also C++.