Pseudocode – Arrays

- Arrays are fixed‑length structures containing elements of the same data type.  

- Elements are accessed by consecutive index numbers.  

- Best practice: explicitly state the lower bound of the array.  

- Square brackets are used to indicate array indices.  

Declaration  

- One‑dimensional array:

DECLARE <identifier> : ARRAY[<l>:<u>] OF <data type>

- Two‑dimensional array:  

DECLARE <identifier> : ARRAY[<l1>:<u1>, <l2>:<u2>] OF <data type>

- Only one index value is used for each dimension inside the brackets.  

Usage Notes  

- Statements should not refer to a group of array elements collectively.  

  Example (incorrect):  

  StudentNames[1 TO 30] <-- ""

- Instead, use a loop structure to assign values individually.  

 Example (correct):  

  FOR i <-- 1 TO 30

      StudentNames[i] <-- ""

  END FOR