Go to the 'Build Phases' tab, and you'll see this:Īdd your input file to the 'Copy Files' section. Then, click on the project name right above your list of files. Outfile New->File (or skip this and drag a file into Xcode). It will copy the contents from file1.txt to file2.txt: Using ifstream and ofstream is pretty simple in Xcode, and there are (at least) two methods to do so. If you do not specify the MYARQ environment variable, then it will instead read from cin as normal. Now cin will behave the same as if you redirected the contents of a text file to a program, as seen above. myExecutable Edit Scheme and add an environment variable with the value of your text file nameįinally, in your main function (before you do any input processing) add the following: Let's say your project spec wants you to use a file as input, but using cin (NOT ifstream). Voila! You will now have these three arguments acessible to you as argv, 2 and 3. In this case, we add arg1, arg2 and arg3. If you see something different, make sure you have selected 'Run' on the left, and 'Arguments' on topĪdd whatever arguments you need in the 'Arguments Passed on Launch' box, and click Okay. or click on the project name right next to the Run button. If you ran the excecutable from the command line, it would look like this: Let's use an example where we have three arguments, arg1, arg2 and arg3.

Many projects will require your program to accept several command line arguments. On the next screen select where you your project will be saved and remember to check 'Create local git repository for this project' Command Line Arguments Name your project and set it's 'Type' to C++ In the OS X section, select 'Application' and then select the 'Command Line Tool' option. After opening Xcode, go to File->New->Project

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