Null Pointer
This lesson highlights the key features of the null pointer.
We'll cover the following
Before C++11, 0
was often used to represent an empty or null value when the NULL
macro was not applicable. The issue with the literal 0
is that it can be the null pointer (void*)0
or the number 0
. This is defined by the context.
Therefore, a small program with the number 0
should be confusing.
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