Apple uses C for some bits. Also there are Objective C APIs which take format strings, like +[NSString stringWithFormat:] and the system function NSLog(). Eve

Apple uses C for some bits. Also there are Objective C APIs which take format strings, like +[NSString stringWithFormat:] and the system function NSLog(). Even Swift uses format strings in places. https://developer.apple.com/documentation/swift/string/3126742-init https://developer.apple.com/documentation/swift/string/31267...