In c- Topic pointers Why do they call it dereferencing- As in derefer.docx
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The document explains the concept of dereferencing pointers in C programming, which involves accessing the value stored at a memory address pointed to by a pointer. The term 'dereferencing' comes from the Latin prefix meaning 'from,' indicating that it takes away the reference to provide direct access to the value. It describes the use of the dereferencing operator (*) and provides an example of its application in struct data access.
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In c- Topic pointers Why do they call it dereferencing- As in derefer.docx
- 1. In c, Topic pointers Why do they call it dereferencing? As in dereferencing the pointer. Where does that name come from? In c, Topic pointers Why do they call it dereferencing? As in dereferencing the pointer. Where does that name come from? Topic pointers Why do they call it dereferencing? As in dereferencing the pointer. Where does that name come from? Solution a.) A pointer is a variable that consists the address in memory of another variable. The deference of a pointer gives the contents of an object pointed to by the pointer. b.) Through this we are accessing a variable indirectly. De- prefix mostly comes from the latin preposition meaning from. Dereferencing takes asway the reference and gives us what we are actually referring to. c.) The unary operator * is the dereferecing operator ,which helps in accessing the object the pointer points to. d.) Example: typedef  struct X{int i_; double d_;} X; X   x; X*  p= &x; p->d_=3.15576;    // dereferencing and accessing the data member x.d_
- 2. (*p).d_*=-1;