What does dereferencing a pointer mean in C C++? Please include an example with the explanation Reviewing the basic terminology It's usually good enough - unless you're programming assembly - to envisage a pointer containing a numeric memory address, with 1 referring to the second byte in the process's memory, 2 the third, 3 the fourth and so on
What is the difference between varchar and nvarchar? An nvarchar column can store any Unicode data A varchar column is restricted to an 8-bit codepage Some people think that varchar should be used because it takes up less space
Whats the difference between passing by reference vs. passing by value? Now, in modern languages, variables tend to be of "reference types" (another concept invented later than "pass by reference" and inspired by it), i e the actual object data is stored separately somewhere (usually, on the heap), and only "references" to it are ever held in variables and passed as arguments 3
What exactly does mean the term dereferencing an object? I'm reading the description of the new feature in C# 8 called nullable reference types The description discusses so called null-forgiving operator The example in the description talks about de-
Meaning of referencing and dereferencing in C Referencing is the reference operator It will refer the memory address to the pointer variable Example: int *p; int a=5; p= a; Here Pointer variable p refers to the address of integer variable a