Question

I would like to run my Objective-C code inside Xcode, but not for the iPhone or Mac. I want to write programs to solve the challenges from Project Euler, without starting up the simulator. I am using NSLog() to display my results, and that’s all I need.

How can I do this? I checked everywhere but all I found were questions about how to run Objective-C outside of Xcode and so on.

Answer 1

If I’m understanding right, you want to create a “Command-Line Tool”, one of the options under the Mac OS X templates:

That’ll give you a project containing just one code file, main.m:

//  main.m
//  Project Euler Puzzle #N
//
//  Created by pnizzle on 8/7/12.

#import <Foundation/Foundation.h>


int main(int argc, const char * argv[])
{

    @autoreleasepool {

    }
    return 0;
}

It’s linked against Foundation and compiled as ObjC, so you can do pretty much anything you would do in a GUI app (except the GUI parts, of course), including creating your own classes. main() is the entry point for your program; just put whatever you want to do inside that @autoreleasepool block.