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Question

In which header file is the NULL macro defined?


Options:
A .  stdio.h
B .  stddef.h
C .  stdio.h and stddef.h
D .  math.h
Answer: Option C

The macro "NULL" is defined in locale.h, stddef.h, stdio.h, stdlib.h, string.h,

 time.h, and wchar.h.



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