@interface NSRuby : NSObject {
   int x, y;
}
-(void) sayHello;
+(NSString *) scientificName;
@end

@implementation
-(void) sayHello {
   NSLog(@"Hello, World!");
}

+(NSString *) scientificName {
   int x = 2 + 5 * 5 / 8;
   return @"Homo Sapien!";
}
@end