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Pointers and arrays are both important concepts in computer programming. While there are some similarities between pointers and arrays, there are also some key differences. Here are some of the main differences:

  1. Definition: An array is a collection of data of the same type, stored in contiguous memory locations. A pointer is a variable that holds the memory address of another variable.
  2. Size: The size of an array is fixed and declared when the array is defined. The size of a pointer is not fixed, but depends on the size of the data type it points to.
  3. Values: An array stores values directly in the memory locations it occupies. A pointer holds the memory address of another variable, which may or may not have a value.
  4. Operations: An array can be used as an argument to a function, but it is always passed by reference. A pointer can be used as an argument to a function and can be passed by value or by reference.
  5. Arithmetic: Arithmetic operations, such as addition and subtraction, can be performed on pointers to navigate through memory. These operations are not possible with arrays.
  6. Memory allocation: Arrays are statically allocated, which means that memory is allocated at compile-time. Pointers can be dynamically allocated, which means that memory is allocated at run-time.

In summary, arrays and pointers are both used to work with memory in programming, but they have different characteristics and uses.


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