How is Objective C different from C++?
devquora
Posted On: Feb 22, 2018
There are a considerable amount of difference between c and c++ :
| Objective C | C++ |
| The classes in Objective C allow a method or function and a variable with the exact same name. | In case of C++, they must be different. |
| Objective C does not support a constructor or destructor. Instead, it has init and dealloc methods, which must be called explicitly when needed. | C++ supports constructors and destructors. |
| Objective C uses the signs + and – to differentiate between class methods (which are also known as factory methods in Java) and instance methods. | On the other hand, C++ uses static to specify a factory method. |
| Multiple inheritances is not allowed in Objective C, however, a user can use a protocol to some extent. | Multiple inheritances are allowed in C++. |
| Objective C does not directly allow for method overloading and has a workaround, but that is not the case for operator overloading. | C++ directly allows for method overloading. |
| Objective C does not allow stack-based objects either. Each object must be a pointer to a block of memory for it to exist. | C++ can use stack based objects which is automatically allocated, instantiated and deallocated on the stack. |
| In Objective C the message overloading is somehow faked by naming the parameters. The user is required to mangle the names manually. | C++ actually does the same but the compiler does the name mangling for the user instead of having to do it himself. |
| Objective C doesn’t allow automatic type coercion. | C++ allows automatic type coercion. |
| Objective C has references. But as pointers can be used wherever a reference is employed, there isn’t any specific need for references in general. | C++ has references as the language requires. |
| Objective C doesn’t have templates. | The users of C++ need templates because the programming language has a strong typing and static binding that prevents generic classes, such as Lists and Arrays. |
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