#import <Foundation/Foundation.h>

class Hello {
    private:
        id greeting_text;

    public:
        Hello() {
            greeting_text = @"Hello, world!";
        }

        Hello(const char* initial_greeting_text) {
            greeting_text = [[NSString alloc] initWithUTF8String:initial_greeting_text];
        }

        void say_hello() {
            printf("%s\n", [greeting_text UTF8String]);
        }
};

@interface Greeting : NSObject {
    @private
        Hello *hello;

}
- (id)init;
- (void)dealloc;
- (void)sayGreeting;
- (void)sayGreeting:(Hello*)greeting;
@end

@implementation Greeting
- (id)init {
    self = [super init];
    if (self) {
        hello = new Hello();
    }
    return self;
}

- (void)dealloc {
    delete hello;
    [super dealloc];
}

- (void)sayGreeting {
    hello->say_hello();
}

- (void)sayGreeting:(Hello*)greeting {
    greeting->say_hello();
}
@end

int main() {

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    Greeting *greeting = [[Greeting alloc] init];
    [greeting sayGreeting];

    Hello *hello = new Hello("Bonjour, monde!");
    [greeting sayGreeting:hello];

    delete hello;
    [greeting release];
    [pool release];
    return 0;
}