Is there any difference between null and NULL ?
I know null character ('\0') other than that any co-relation between them ?
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Surya Prakash Patel
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Related, if not a duplicate to: http://stackoverflow.com/q/1296843/694576 – alk Apr 11 '16 at 17:32
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Yes. If you use the wrong one, you get warnings and/or errors. – Martin James Apr 11 '16 at 17:32
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2C and C++ are different languages. When asking about something, it is in general a good idea to provide the necessary definitions and use markdown. – too honest for this site Apr 11 '16 at 17:33
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"null" does not exist in the C language. – Lee Daniel Crocker Apr 11 '16 at 19:30
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NULL is a macro that yields a null pointer constant (typically a plain, unadorned 0 or 0L in C++, and ((void *)0) in C). In modern C++, nullptr is usually the preferred way to get a null pointer constant though.
NUL is the ASCII designation for a zero-byte. The C standard calls this a "null character".
"null" is a normal word. In C++, its primary use is as part of the phrase "null pointer" (or "null pointer constant").
Jerry Coffin
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In C++, using `NULL` or `0` is deprecated. Use `nullptr` instead. Not sure about C++, but in C, `\0` is also a _null pointer constant_. It should not be used just by convention. – too honest for this site Apr 11 '16 at 17:34
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1and `0LL`, `0ULL`, `0U`, `0UL` and `0x0000000` and `00`, `(1+2-3)` and `(7 / 3 - 2)` are all *null pointer constants* in C. – Antti Haapala -- Слава Україні Apr 11 '16 at 17:42
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"null" is also used extensively in C as part of _null character_: `'\0'`. – chux - Reinstate Monica Apr 11 '16 at 17:59