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C | Macro & Preprocessor | Question 11

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  • Difficulty Level : Medium
  • Last Updated : 28 Jun, 2021
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What is the use of “#pragma once”?
(A) Used in a header file to avoid its inclusion more than once.
(B) Used to avoid multiple declarations of same variable.
(C) Used in a c file to include a header file at least once.
(D) Used to avoid assertions


Answer: (A)

Explanation:

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