Specifying the C/C++ version with Xcode

1. Open your project inside Xcode.

2. At the left of the window, in the file/folder list, click on the project item.

3. Click on Build Settings.

4. Scroll to Apple Clang - Language.

5. We can choose the C version used.

6. We can also choose the C++ version used.

Note that the difference between the versions starting with C++ and those with GNU is that the GNU versions include additional non-standard features.

7. The Standard Libraries may be implemented (Coded) in many different ways. Its is possible to choose the implementation of the C++ Standard Library: