What are the differences between objective-c and C + +?

the objective-c development language is an object-oriented programming language thatexpands C , which is used for IOS Developmentobjective-c Language , but recently Microsoft revealed Objective CNewTechnology, its latestIDE Visual Studiocan beobjective-ccode compilation runs onWindows Tenon. It is said that this technology canobjective-cthe code as much as possible intoJavaorC + +code that hooks into the native platformAPI. So is the same"C",objective-cand theC + +What's the difference between them?

　　 objective-c, usually writingOBJCand less-usedObjective Corobj-c, is to expandCObject-oriented programming language. It is mainly used inMac OS Xand theGNUstepthese two useOpenStepstandard system, while in theNeXTSTEPand theOpenStepIt is more of a basic language. objective-ccan be inGCCas wellClangto write and compile on the operating system becauseGCCwith theClangcontainingobjective-cthe compiler.

　　objective-c is a very practical language. It is a C -written, very small runtime, only makes the size of the application small, and most of the OO system uses a large number of VMS The execution time will replace the whole system's operation instead.

( ) also and smalltalk

So, theoretically,objective-c It is fully compatible with the standard C language; In contrast, C Language compatibility is mainly manifested in the syntax,objective-c on this basis, added the object-oriented programming language features and Smalltalk message mechanism.

Unlike C + + ,objective-c does not support operator overloading.

as in Java,objective-c only allows objects to inherit one category ( without multiple inheritance ). This is also different from C + + .

　　objective-c multiple inheritance is not supported, and C + + The language supports multiple inheritance.

　　objective-c is dynamic training ( dynamicaly typed) so it's class cubby C + + easy to operate. objective-c can allow access to methods and classes based on string names at run time, and can also dynamically connect and add classes.

In C + + , the static type of an object determines whether you can send a message to it, and for objective-c , it is determined by the dynamic type.

What are the differences between objective-c and C + +?