Common Pseudocode Notations

Variables and Data Types

• DECLARE: Declare a variable (e.g., DECLARE x INTEGER)
• ASSIGN: Assign a value to a variable (e.g., x = 5)

Control Structures

• IF-THEN: Conditional statement (e.g., IF x > 5 THEN PRINT "x is greater than 5")
• IF-THEN-ELSE: Conditional statement with alternative action (e.g., IF x > 5 THEN PRINT "x is greater than 5" ELSE PRINT "x is less than or equal to 5")
• FOR LOOP: Iterate over a sequence (e.g., FOR i = 1 TO 5 DO PRINT i)
• WHILE LOOP: Iterate while a condition is true (e.g., WHILE x < 5 DO x = x + 1)

Functions and Procedures

• FUNCTION: Define a reusable block of code (e.g., FUNCTION calculateArea(length, width))
• PROCEDURE: Define a block of code that performs a specific task (e.g., PROCEDURE printHello)

Input/Output

• READ: Read input from a user or system (e.g., READ userInput)
• PRINT: Output data to a user or system (e.g., PRINT "Hello, world!")

Operators

• ARITHMETIC OPERATORS: +, -, *, /, MOD (modulus)
• COMPARISON OPERATORS: =, ≠, <, >, ≤, ≥
• LOGICAL OPERATORS: AND, OR, NOT

Example

IF user_age > 18 THEN
  PRINT "You are an adult."
ELSE
  PRINT "You are not an adult."
END IF