NULL is defined as either 0 or (void*)0. These values are almost identical; either a literal zero or a void pointer is converted automatically to any kind of pointer, as necessary, whenever a pointer is needed (although the compiler can't always tell when a pointer is needed).
#include statement must be written a) Before main() b) Before any scanf/printf c) After main() d) It can be written anywhere
What is line in C Preprocessor?
What is file in C Preprocessor?
What is #line?
What are the preprocessor categories?
If you know then define #pragma?
What is #error and use of it?
Where define directive used?
What are types of Preprocessor in C?
What is include directive in C?
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