What are the pointer declarations used in C?

• A pointer in c++ is declared as *p
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  C++ Null Pointers-- C++ supports null pointer, which is a constant with a value of zero defined in several standard libraries.
  C++ pointer arithmetic-- There are four arithmetic operators that can be used on pointers: ++, --, +, -
  C++ pointers vs arrays There is a close relationship between pointers and arrays. Let us check how?
  C++ array of pointers You can define arrays to hold a number of pointers.
  C++ pointer to pointer C++ allows you to have pointer on a pointer and so on.
  Passing pointers to functions-- Passing an argument by reference or by address both enable the passed argument to be changed in the calling function by the called function.
  Return pointer from functions-- -C++ allows a function to return a pointer to local variable, static variable and dynamically allocated memory as well.
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