What programming language should I use for making an iPhone game? iOS SDK or cocos2d?

piggins1

I'm relatively new to programming and I'm wondering what programming language is best for making games for the iPhone. I can code in iOS SDK relatively well, but I'm not sure if it's better for me to use my current language or cocos2d.

LiquidGameworks

Why would you ask this in a forum for GameSalad, a program designed specifically for non-coders?