Code C On Mac

We are interested in trying C on VS Code, but couldn't find a guide simple enough to build and debug C for Mac (macOs High Sierra 10.13.6). This guide will focus on how to do that.

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Question or issue on macOS:

While reading various C and C++ sources, I have encountered two macros __APPLE__ and __OSX__. I found plenty of use of __OSX__ in various codes, especially those originating from *BSD systems.

However, sometimes I find that testing __OSX__ only is not sufficient and I have to complete tests with __APPLE__ macro.

1. See the Macintosh Computing Lab page to see which Mac operating system is installed. Activate Extended Keyboard To use these codes, you need to activate the U.S. Extended keyboard (or ABC Extented in El Capitan) in the System Preferences following the instructions below.
2. I recently bought a macbook and was wondering if I can write C and C programs on mac without having to install anything more. Say for Java, mac came with a preinstalled version.
3. Apple's own free Xcode, a full-featured C IDE, is a good place to start for writing Ccode on a Mac. XCode is actually designed specifically for developers to write macOS, iOS, tvOS and watchOS applications using Swift or Objective-C. If you already do iOS and MacOS development, then Xcode may be your best option for C as well.
4. Learning to code is one of the best moves you can make. In our complete guide to programming and coding on a Mac, we cover each of the programming languages and how to learn them, how to set up.

The Porting Command Line Unix Tools to Mac OS X guides specifies __APPLE__ and additionally __APPLE_CC__ but does not mention __OSX__.

The Porting from GCC guide says:

Again, no mention about __OSX__ macro.

What macro is predefined on Mac OS X platform and XCode development environment that should be used to distinguish OSX-specific code in C/C++ programs?

Where is the __OSX__ macro defined? Is it *BSD specific macro?

How to solve this problem?

Solution no. 1:

It all depends.

Each macro specifies something different in meaning.
See: https://developer.apple.com/library/mac/documentation/Porting/Conceptual/PortingUnix/compiling/compiling.html#//apple_ref/doc/uid/TP40002850-SW13

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__APPLE__
This macro is defined in any Apple computer.
__APPLE_CC__
This macro is set to an integer that represents the version number of
the compiler. This lets you distinguish, for example, between compilers
based on the same version of GCC, but with different bug fixes or features.
Larger values denote later compilers.
__OSX__
Presumably the OS is a particular variant of OS X

Good video editing programs for mac. So given the above definitions I would use __APPLE__ to distinguish apple specific code.

Solution no. 2:

Here is a nice list of macros for operating systems.

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There's little info on __OSX__ on the web. You'll be safe with __APPLE__.

Solution no. 3:

I normally use __MACH__ for this. It's been defined since the earliest version of OS X (and even before, presumably).

Solution no. 4:

Use

to distinguish Apple MacOS (not iOS).

Regarding the 'where does OSX come from':

Some on-line lists of compiler macros (like this one) list __MACOSX__. Some forum comments (like these) claim __OSX__ exists. These are incorrect. There are no such macros predefined by OSX compilers, but they may be defined by specific project Makefiles and platform-detector scripts like GNU autoconf.

Source: http://nadeausoftware.com/articles/2012/01/c_c_tip_how_use_compiler_predefined_macros_detect_operating_system https://linglaraci1982.mystrikingly.com/blog/scrivener-3-0-1-for-mac-crack-download.

Solution no. 5:

See http://nadeausoftware.com/articles/2012/01/c_c_tip_how_use_compiler_predefined_macros_detect_operating_system#OSXiOSandDarwin

Note that __OSX__ does NOT exist, at least as of Xcode 9.

Also note that it is #if TARGET_OS_MAC not #ifdef. It is always defined, but is 0 when not macOS.

Solution no. 6:

For anyone coming across this question >= 2019, I found there's a header 'Availability.h'.

In that header, are #defines like:

So you CAN tell if you're compiling on a particular MacOS platform. https://oujae.over-blog.com/2021/01/wd-my-passport-1tb-external-hard-drive-for-mac.html.

Hope this helps!

The U.S. Extended keyboard allows you to types accented carons (č), ogoneks (ą), dots (ṭ), thorns (þ) and others.
This page includes instructions for activating the Extended Keyboard and its codes.

Page Content

1. Combining Diacritics – Makes any combination, but there may be display issues

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Follow the instructions below to activate different keyboards as needed. They will remain active in your profile between logins. https://downvup415.weebly.com/slots-of-vegas-codes-2016.html. See the Macintosh Computing Lab page to see which Mac operating system is installed.

Activate Extended Keyboard

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To use these codes, you need to activate the U.S. Extended keyboard (or ABC Extented in El Capitan) in the System Preferences following the instructions below.
Note: Some codes may not work if the software or Web site does not fully support Unicode.

Activate U.S. Extended Keyboard in Yosemite/Mavericks

1. Go to the Apple menu and open Systems Preferences.
2. Click the Languages and Regions (U.N. flag) icon on the first row of the Systems Preferences panel.
3. lick the Keyboard Preferences button at the bottom of the window to open the keyboard preferences.
4. Click the Input Sources tab.
5. Click the + putton to see a list of languages with keyboards. The U.S. Extended keyboard is listed under English. Click Add to ensure that they keyboard is activated.

Switch Keyboards

1. Make sure you have activated all the appropriate keyboards following the instructions in the previous section.
2. Open a software application such as a word processor, spread-sheet or any other application in which you need to enter text.
3. On the upper right portion of the screen, click on the American flag icon (). Use the dropdown menu to select the U.S.Extended Keyboard ().
4. The keyboard will be switched and an appropriate font will be selected within the application. A flag icon corresponding to the keyboard will be displayed on the upper right.
5. To switch back to the standard U.S. keyboard or to some other keyboard, click on the flag icon on the upper right and select a keyboard from the dropdown menu.

Note on Fonts

Many of the fonts from Apple, Adobe and Unicode friendly fonts include the extended accents, but some older fonts or decorative fonts may be missing characters. Check your documents carefully to be sure formatting is consistent.

Extended Keyboard Codes

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Note: If these codes are not working, then please make sure you have activated and switched to the extended keyboard following the instructions above.

Combining Diacritics

These codes add accents to ANY Letter via Unicode combining characters (glossary). As a result, there may be unusual display issues with certain fonts or certain letters (e.g. capital letters).

To use these codes first type the letter, then type the code.
NOTE: If these codes are not working, then please make sure you have activated and switched to the extended keyboard following the instructions above.