Write to files with this Objective-C example

Here is a quick example to get you started on Objective-C. You can compile it within Terminal using the command line. Source code zip file here.
The gcc compiler command is as follows:
gcc filetest.m -Wall -o filetest -framework Foundation

Once compiled execute it as follows ./filetest
This will then create a text file called filetest.txt which contains a text string.
No magic required.

Note the writeToFile method has change for OS X 10.5 it now includes data encoding and NSError.
Once you have this working you can experiment with writeToURL...enjoy

// filetest.m
// Created by macateeny.blogspot.com Sept 2008.
// Copyleft (c) 2008. some rights reserved.
// 
// Compile from the command line with:
// gcc filetest.m -Wall -o filetest -framework Foundation
//

#import <Foundation/Foundation.h>

// main entry point of our file test tool with the argument counter and vector
int main(int argc,char *argv[])
{
        // allocate a memory pool for our NSString Objects
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

        // declare NSString Obj pointer and initialise it
        NSString *str = @"Cooking with Objective-C\r\n";

        // declare NSString filename and alloc string value
        NSString *filenameStr = @"./filetest.txt";

        // NSObject which contains all the error information
        NSError *error;

        // write contents and check went ok
        if(![str writeToFile: filenameStr atomically: YES encoding:NSUTF8StringEncoding error:&error]) {
                NSLog(@"We have a problem %@\r\n",[error localizedFailureReason]);
        }

        // unleash the allocated pool smithers
        [pool release];

        // The app is terminated
        return 0;
}



md5sum: 9463cf40d33f02093e72d80320ba92e4  filetest.zip