From my perspective, Objective-C is mainly used to develop for OS X and iOS. And even there, a lot of people tend to use C++ because of portability. Looking at a language comparison over at Ohloh, I can't really see much of a trend that Objective-C will replace C++ in the near future.

Also have a look at this question (Objective-C or C++ for iOS?).

I personally like Objective-C, but C++ is far more widespread and very portable. You'll also find tons of resources and libraries about/for C++. If you want to develop specifically for iOS or Mac OS X, you could consider Objective-C, but for all other cases I strongly reccomend C++.

From my perspective, Objective-C is mainly used to develop for OS X and iOS. And even there, a lot of people tend to use C++ because of portability. Looking at a language comparison over at Ohloh, I can't really see much of a trend that Objective-C will replace C++ in the near future.

Also have a look at this question (Objective-C or C++ for iOS?).

I personally like Objective-C, but C++ is far more widespread and very portable. You'll also find tons of resources and libraries about/for C++. If you want to develop specifically for iOS or Mac OS X, you could consider Objective-C, but for all other cases I strongly reccomend C++.