array.m

#import <Cocoa/Cocoa.h>

@interface Book : NSObject {
}

- (id)init;
- (void)dealloc;

@end

@implementation Book

- (id)init
{
    NSLog(@"Book init");
    if(self = [super init]){
    }
    return self;
}

- (void)dealloc
{
    NSLog(@"Book dealloc");
    [super dealloc];
}

@end

int main(){
	Book * book = [[Book alloc] init];
	NSLog(@"count = %d", [book retainCount]);

	NSMutableArray * array = [[NSMutableArray alloc] init];
	[array addObject:book];
	NSLog(@"count = %d", [book retainCount]);

	[array release];
	NSLog(@"count = %d", [book retainCount]);

	[book release];
	return 0;
}