Assignment Overview

This practice assignment is designed to help students apply the concepts of operators and expressions in programming. Students will identify operators, evaluate expressions, use assignment operators, apply logical conditions, understand precedence and associativity, and write small language-neutral pseudocode programs.

The purpose of this assignment is not to memorize syntax from one programming language. Instead, students should understand how operators work, how expressions produce results, and how programs use operators to calculate, compare, assign, and make decisions.

Learning Objectives

After completing this assignment, students should be able to:

Prerequisites

Before attempting this assignment, students should revise the following topics:

Assignment Instructions

Read each task carefully and write your answers clearly. Use language-neutral pseudocode where coding is required.

Task 1: Identify Operator, Operand, and Expression

Identify the operators, operands, and final expression from the given examples.

Task 2: Identify the Operator Type

Identify whether each operator is arithmetic, assignment, comparison, or logical.

Task 3: Evaluate Arithmetic Expressions

Evaluate the following expressions step by step.

1. 10 + 5 * 2
2. (10 + 5) * 2
3. 20 - 4 * 3 + 2
4. 100 / 5 / 2
5. 100 / 5 % 3
6. 8 + 2 * 5 - 6 / 3
7. (8 + 2) * (5 - 3)
8. 25 % 4 + 6

Your Answer Format

Expression:
Step-by-step evaluation:
Final result:

Task 4: Assignment Operators

Find the final value of score after each operation.

SET score = 50

SET score += 20
SET score -= 10
SET score *= 2
SET score /= 5
SET score %= 7

DISPLAY score

Your Task

Write the value of score after each step.

Task 5: Logical Operators

Evaluate the following logical expressions. Assume:

SET isLoggedIn = true
SET isAdmin = false
SET hasPermission = true
SET isBanned = false

Task 6: Increment and Decrement Concepts

Trace the value of counter after each statement.

SET counter = 3

SET counter = counter + 1
SET counter = counter + 1
SET counter = counter - 1
SET counter = counter + 1
SET counter = counter - 1

DISPLAY counter

Trace Table

Task 7: Operator Precedence

Add parentheses to show the actual evaluation order.

Task 8: Operator Associativity

Identify the grouping based on associativity.

Task 9: Find and Correct the Mistakes

Identify the problems in the following pseudocode and rewrite it correctly.

SET mathMarks = 80
SET scienceMarks = 70
SET englishMarks = 90

SET averageMarks = mathMarks + scienceMarks + englishMarks / 3

IF averageMarks >= 35 OR averageMarks <= 100 THEN
    DISPLAY "Valid average"
ELSE
    DISPLAY "Invalid average"
END IF

Mistakes to Find

Write Corrected Version

WRITE YOUR CORRECTED PSEUDOCODE HERE

Task 10: Mini Program - Simple Calculator

Write language-neutral pseudocode for a simple calculator.

Requirements

Your Pseudocode

WRITE YOUR SIMPLE CALCULATOR PSEUDOCODE HERE

Task 11: Mini Program - Student Eligibility Checker

Write pseudocode to check whether a student is eligible for an exam.

Requirements

Your Pseudocode

WRITE YOUR STUDENT ELIGIBILITY CHECKER PSEUDOCODE HERE

Task 12: Mini Program - Billing Expression

Write pseudocode to calculate a final bill amount using arithmetic and assignment operators.

Requirements

Your Pseudocode

WRITE YOUR BILLING EXPRESSION PSEUDOCODE HERE

Bonus Challenge

Create a small program that uses at least three types of operators.

Requirements

Bonus Pseudocode Area

WRITE YOUR BONUS PROGRAM HERE

Submission Checklist

Before submitting, students should check the following:

Evaluation Rubric

The assignment can be evaluated using the following rubric.

Sample Answer Key

This answer key can be used by instructors for checking. Students should attempt the assignment first before viewing the answers.

Task 3: Arithmetic Expression Answers

Task 4: Assignment Operator Answer

Task 9: Corrected Pseudocode

SET mathMarks = 80
SET scienceMarks = 70
SET englishMarks = 90

SET averageMarks = (mathMarks + scienceMarks + englishMarks) / 3

IF averageMarks >= 35 AND averageMarks <= 100 THEN
    DISPLAY "Valid average"
ELSE
    DISPLAY "Invalid average"
END IF

Task 10: Simple Calculator Sample

ENTRY POINT
    DECLARE numberOne AS DECIMAL = 0.0
    DECLARE numberTwo AS DECIMAL = 0.0
    DECLARE sum AS DECIMAL = 0.0
    DECLARE difference AS DECIMAL = 0.0
    DECLARE product AS DECIMAL = 0.0
    DECLARE quotient AS DECIMAL = 0.0

    INPUT numberOne
    INPUT numberTwo

    SET sum = numberOne + numberTwo
    SET difference = numberOne - numberTwo
    SET product = numberOne * numberTwo

    IF numberTwo != 0 THEN
        SET quotient = numberOne / numberTwo
        DISPLAY quotient
    ELSE
        DISPLAY "Division by zero is not allowed"
    END IF

    DISPLAY sum
    DISPLAY difference
    DISPLAY product
END ENTRY POINT

Task 11: Student Eligibility Checker Sample

ENTRY POINT
    DECLARE studentName AS TEXT = ""
    DECLARE attendancePercentage AS DECIMAL = 0.0
    DECLARE feesPaid AS BOOLEAN = false
    DECLARE hasAdmitCard AS BOOLEAN = false

    INPUT studentName
    INPUT attendancePercentage
    INPUT feesPaid
    INPUT hasAdmitCard

    IF attendancePercentage >= 75 AND feesPaid AND hasAdmitCard THEN
        DISPLAY "Student is eligible for exam"
    ELSE
        DISPLAY "Student is not eligible for exam"
    END IF
END ENTRY POINT

Task 12: Billing Expression Sample

ENTRY POINT
    DECLARE productPrice AS DECIMAL = 0.0
    DECLARE quantity AS INTEGER = 0
    DECLARE discountAmount AS DECIMAL = 0.0
    DECLARE subtotal AS DECIMAL = 0.0
    DECLARE finalAmount AS DECIMAL = 0.0

    INPUT productPrice
    INPUT quantity
    INPUT discountAmount

    SET subtotal = productPrice * quantity
    SET finalAmount = subtotal - discountAmount

    IF finalAmount >= 1000 THEN
        DISPLAY "Large purchase"
    ELSE
        DISPLAY "Regular purchase"
    END IF

    DISPLAY subtotal
    DISPLAY finalAmount
END ENTRY POINT

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