#import <Foundation/Foundation.h>     // allows use of NSLog from Apple's Cocoa environment

int main (int argc, const char * argv[]) 
{
   NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
   
   NSLog(@"hello world");
   NSLog(@"");
   NSLog(@"first line\nsecond line");
   NSLog(@"escape sequences: \\ \"");
   
   int num = 1;
   NSLog(@"%d", num);
   NSLog(@"num = %d", num);
   
   float price = 19.999;
   NSLog(@"price = $%f", price);

   int x = 123456;
   NSLog(@"%2d", x);
   NSLog(@"%4d", x);
   NSLog(@"%6d", x);
   NSLog(@"%8d", x);

   float y = 1234.5678;
   NSLog(@"Reserve a space of 10, and show 2 significant digits.");
   NSLog(@"%10.2f", y);
   
   int z = 8;
   float pi = 3.1416;
   NSLog(@"The integer value is %d, whereas the float value is %f.", z, pi);
   
   [pool release];
   return 0;
}// end of main