what is the value of null in c
Null pointer In C, two null pointers of any type are guaranteed to compare equal.[1] The preprocessor macro NULL is defined as an implementation-defined null pointer constant,[2] which in C99 can be portably expressed as the integer value 0 converted implicitly or explicitly to the type void* (pointer to void).[3] The C standard does not say that the null pointer is the same as the pointer to memory addressÂ 0, though that may be the case in practice. Dereferencing a null pointer is undefined behavior in C, and a conforming implementation is allowed to assume that any pointer that is dereferenced is not null.
Nullification Crisis The Nullification Crisis was a United States sectional political crisis in 1832â€“33, during the presidency of Andrew Jackson, which involved a confrontation between South Carolina and the federal government. It ensued after South Carolina declared that the federal Tariffs of 1828 and 1832 were unconstitutional and therefore null and void within the sovereign boundaries of the state.