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GeekInterview.com > Interview Questions > Programming > C
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Question: What is a null macro?
What is the differtents between a null pointer and a null macro?
What is near, far and huge pointer?
How many bytes are occupied by them?
How would you obtain segment and offset addresses from a far address of a memory location?
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| March 03, 2007 08:29:20 |
#4 |
| dasam |
CRM Expert Member Since: March 2007 Total Comments: 33 |
RE: What is a null macro? What is the differte...
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| NULL MACRO : #define NULL 0NULL Pointer : int* ptr = NULL; //points to no whereuninitialised pointer : int* ptr; //points to anywhere |
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