What is the difference between #import "xxx" and #import <xxx>?

Question

Possible duplicate:
What is the difference between #include <filename> and #include "file name"?
The difference between writing #import <filename.h> and #import "filename.h". Have I written the file name in angular brackets and quotation marks?

This may be a dumb question. What is the difference between #import <QuartzCore/QuartzCore.h>and #import "QuartzCore/QuartzCore.h"? (more or less than double quotes)

They both work.

Answer 1

#import "QuartzCore/QuartzCore.h" - " , ", <QuartzCore/QuartzCore.h> - " ". , - , C, - .

Answer 2

#include <something> , .
#include "something" .