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Possible Duplicate:
What is the difference between #import and #include in Objective-C?
What is the difference between
#include< >
#include" "
#import< >
#import" "
The
#importdirective is an improved version of#include.#importensures that a file is only ever included once so that you never have a problem with recursive includes.#import ""first check the header in project folder then goes to system library, and the#import<>checks for system headers”. In theory the locations are compiler defined and they could be implemented differently on a given platform.