Functions

The NSLog routine is an example of a function that you have used in every program so far. Indeed, every program also has used a function called main. Let’s go back to the first program you wrote (Program 2.1), which displayed the phrase “Programming is fun.” at the terminal:

#import <Foundation/Foundation.h>

int main (int argc, char *argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSLog (@"Programming is fun.");
    [pool drain];
    return 0;
}