Cannot run app on device or simulator in Visual Studio 2017 after installing Xcode 9.3. But anyway, by selecting the stable channel for VS on the Mac it should work - but it doesn’t. The error, so my understanding, depends on the ressources on the Mac and not what I‘ve installed on my Windows maschine. And also I’ve ever thought, that.
You need Mac OS X 10.13.6 or higher to download Xcode 10.1 from the Mac App Store. If you are running an older version of OS X, we highly recommend updating it to the latest version which is OS X 10.14.2 as of 01/2019. If you are unable to update your OS for whatever reason, first check your OS X version by clicking the Apple logo icon at the top left of your screen and then 'About This Mac,' then head to and download the version of Xcode that is compatible with your OS X version according to the chart below.
If your OS X version is not listed or you have further trouble with downloading and the rest of this guide is not helpful, please attend office hours for help. OS X Version Xcode Version 10.4.x (Tiger) Xcode 2.5 10.5.x (Leopard) Xcode 3.1.2 10.6.x (Snow Leopard) Xcode 3.2.1 10.7.x (Lion) Xcode 4.2.1 10.8.4 or higher (Mountain Lion) Xcode 5.1.1 10.9.4 or higher (Mavericks) Xcode 6.2 10.10.x (Yosemite) Xcode 6.4 10.11.x (El Capitan) Xcode 7.3.1 10.12.x (Sierra) 8.3.3 any version higher (High Sierra or Mojave) follow this guide to download Xcode 10.1.
To create a new project, click on Create a new Xcode project on the left side of the window (you can also select New New Project in the menu bar or press ⇧⌘N). An empty Workspace window will open and you’ll see the New Project Assistant sheet that will help you get started. We’ll be using Xcode to develop C programs in EECS 183 (but know that it can also be used to do much more, including making macOS and iOS applications in Objective-C and Swift), so select macOS on the top and then select Command Line Tool template. Type Project-1 in the Product Name field. This will be the name of the project on your computer.
You do not need to select anything for the Team field. You can leave it as None. Organization Name field should already contain your own name. Type in your name if it’s not there. Xcode provides all executables with a unique identifier, which begins with a Organization Identifier. Using a reverse DNS lookup string, i.e.
Reverse email, is a good way to get a unique identifier. Finally, choose C as the project’s type and click Next. Xcode is an amazing IDE and contains everything to provide a powerful and helpful environment to write code. But before you begin coding, take a few minutes to change some of the settings to take even more advantage of Xcode in EECS 183. Select Xcode Preferences in the menu bar and choose Text Editing icon at the top on the window.
Make sure that checkboxes next to Line number and Page guide at column 80 are selected. The former will put a number in the gutter on the left of your code indicating the number of each line, so as to make it easier to talk about your code and debug.
![For For](/uploads/1/2/5/5/125510986/848263670.jpg)
The latter will draw a vertical line in the Editor area to help you avoid having more that 80 characters on any line of code. 80 character lines is a standard that ensures that your code looks good on a wide variety of screen sizes. In the Navigator area on left, click on main.cpp once to select it, then press Enter and type hello and press Enter to rename it to hello.cpp. Now let’s take a look at the source code. You’ll notice that the first 7 lines are green and start with //.
In C, anything that comes after // on the same line is considered a comment. Comments are pieces of text that do not affect the behavior of the program, but rather help those who are reading the source code (you or others) better understand it. It’s also a good idea to put header comments atop every file you create. Besides inline comments (those that start with //), there are also multi-line comments. They begin with / (some programmers like to start them with /.) and continue across the lines until./.
Try replacing the first 7 lines in main.cpp with a multi-line comment that includes at least the filename, the name of the project, your name, your email address and a summary of the program (or that particular file). /. hello.cpp.
EECS 183: Project 0. First Last. [email protected]. Says hello to the world, because I am on my way./. Next, take a look at the following line. Remember that the amount of whitespace, including blank lines, does not affect the behavior of the program. It’s good to separate blocks of code with a blank line, but be sure not to have many consecutive blank lines in your program, else it’ll be difficult to read and is not considered good style.
The next line has an #include directive. It literally inserts more code (from iostream library) in your own code. This gives you access to functionality that others have implemented, such as outputting words onto the console and reading input from the user (which is known as input/output, I/O). Now place your cursor at the end of that line, hit Enter and type. This line allows you to use symbols (functions, variables, etc.) from external libraries without specifying a namespace within which they were defined.
Then take a look at the definition of the main function that begins with int main. Every C program must contain one and only one such main function, which is where the execution of code begins when you run the program. By convention, main always returns an integer (usually 0, which means “all is well”), so its name is preceded by the return type int. The name is followed by a set of parentheses that contain a list of all the parameters (inputs) that a function takes. Since our program just prints “Hello, World!”, main does not need to take any parameters, so remove int argc, const char.
argv that was inserted by Xcodebut be sure to keep the parentheses. You may also remove std:: that precedes cout, since you’ve just specified the namespace several lines above. Cout is a stream into which you insert what you’d like to be output onto the Console pane. What is printed is a string (enclosed in double-quotes) that ends with n (new line character). Since it is not possible to press the Enter (doing so would literally create a new line of code), you need to use this escape character.
![Xcode Xcode](/uploads/1/2/5/5/125510986/631050428.jpg)
Alternatively, delete n and insert Run or by pressing ⌘R). You should see. Older versions of Xcode, such as Xcode 3, do not automatically save files. If you’d like to get a copy of your source code (to submit to the Autograder, to backup or to save it for yourself if you are not working from your own computer), right-click (or Control-click) on a file in the Navigator area on the left and select Show in Finder to open a new Finder window. Now you can upload it to the or to, email it, save it to your USB drive, etc.
Just be sure not to share it with anyone that you are not authorized to share it with! Programs, like functions, can take arguments. Though you will probably not do this in this course, you can run programs from a command line, i.e. A terminal window, and pass them command-line arguments by writing one or more words after the program’s name.
Argc and argv, automatically inserted by Xcode in the parameter list of main, are conventionally used to provide a representation of the program’s command line. Argc ( argument count) is the number of strings that make up the command line, including the program’s name. Argv ( argument vector) is an array that contains those strings.