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NIELIT 2021 Dec Scientist B - Section B: 48

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The following type definition is for a ____________ . 

type pointer $= \; \uparrow$ node

node = record 

data : integer

link : pointer

end;

  1. Structure 
  2. Link List 
  3. Stack
  4. Doubly link list 
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In C programming language: Link list is made using structure of Node type, it contains two different data types: 1st is integer (for key), and 2nd is pointer of struct node type (for next node)

struct Node {

    int data;

    struct Node* link;

};​

Given pseudocode (of Pascal) in question depicts the same for link list.​​​​​ (Up arrow in Pascal is used for dereferencing or "pointer to")

Hence, the answer is option B) Link List.

For more info regarding link list in pascal: 

http://www.baskent.edu.tr/~tkaracay/etudio/ders/prg/pascal/PasHTM2/pas/pasl2002.html

https://books.google.com/books/about/Programming_in_Pascal.html?id=XSvqr6FzNy4C

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