How can I use C++ with Objective-C in XCode

Question

I want to use/reuse C++ object with Objective-C. I have a hello.h that has the class definition, and hello.cpp for class implementation.

class Hello
{ int ge         


        

Answer 1

Make sure you compile that file as "Objective-C++".

The simplest way is to rename it as *.mm.

If you don't want to rename the *.m file,

1. Select your file.
2. Open the File Info dialog (Cmd+I)
3. In File Type, select "sourcecode.cpp.objcpp"

Answer 2

Rename the Objective-C file from filename.m to filename.mm to make it compile as Objective-C++.