Question

I am a iPhone beginner and i want to know how many parameters the main function takes.

Answer 1

The main() function is a standard C main(). It takes two parameters:

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

As Isaac notes, usually you will use the main.m provided for you by XCode:

#import <UIKit/UIKit.h>

int main(int argc, char *argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    int retVal = UIApplicationMain(argc, argv, nil, nil);
    [pool release];
    return retVal;
}