Assignment Overview

What is an Algorithm?

An algorithm is a step-by-step procedure to solve a problem in a finite number of steps.

Objectives

Section A: Theory Questions (30 Marks)

Q1. What is an algorithm? Give one example. (6 marks)

Q2. Name any five characteristics of a good algorithm. (6 marks)

Q3. What is a flowchart? List any 4 flowchart symbols with their uses. (6 marks)

Q4. Explain sequence and selection structure with examples. (6 marks)

Q5. Write the difference between algorithm and flowchart. (6 marks)

Section B: Algorithm Writing (40 Marks)

Algo 1: Sum of Two Numbers (8 marks)

Step 1: Start
Step 2: Read two numbers A and B
Step 3: Calculate SUM = A + B
Step 4: Display SUM
Step 5: Stop

Algo 2: Check Even or Odd (8 marks)

Step 1: Start
Step 2: Read number N
Step 3: Calculate R = N % 2 (remainder)
Step 4: If R == 0 then
            Print "Even"
        Else
            Print "Odd"
Step 5: Stop

Algo 3: Largest of Three Numbers (8 marks)

Step 1: Start
Step 2: Read three numbers A, B, and C
Step 3: If A >= B AND A >= C then
            LARGEST = A
        Else if B >= C then
            LARGEST = B
        Else
            LARGEST = C
Step 4: Display LARGEST
Step 5: Stop

Algo 4: Area of a Rectangle (8 marks)

Step 1: Start
Step 2: Read Length L and Breadth B
Step 3: Calculate AREA = L * B
Step 4: Display AREA
Step 5: Stop

Algo 5: Check Pass or Fail (8 marks)

Step 1: Start
Step 2: Read marks M
Step 3: If M >= 40 then
            Print "Pass"
        Else
            Print "Fail"
Step 4: Stop

Section C: Flowchart Drawing (30 Marks)

Flow 1: Display "Hello World" (10 marks)

Draw:

  ┌────────┐
  │ Start  │  (Oval)
  └───┬────┘
      ↓
  ┌────────────────┐
  │ Display        │  (Parallelogram)
  │ "Hello World"  │
  └───┬────────────┘
      ↓
  ┌────────┐
  │  Stop  │  (Oval)
  └────────┘

Flow 2: Add Two Numbers (10 marks)

Draw:

  ┌────────┐
  │ Start  │  (Oval)
  └───┬────┘
      ↓
  ┌────────────┐
  │ Read A, B  │  (Parallelogram)
  └───┬────────┘
      ↓
  ┌────────────┐
  │ SUM = A+B  │  (Rectangle)
  └───┬────────┘
      ↓
  ┌────────────┐
  │ Print SUM  │  (Parallelogram)
  └───┬────────┘
      ↓
  ┌────────┐
  │  Stop  │  (Oval)
  └────────┘

Flow 3: Check Even or Odd (10 marks)

Draw:

  ┌────────┐
  │ Start  │  (Oval)
  └───┬────┘
      ↓
  ┌──────────┐
  │ Read N   │  (Parallelogram)
  └───┬──────┘
      ↓
  ┌────────────┐
  │ R = N % 2  │  (Rectangle)
  └───┬────────┘
      ↓
  ┌────────────┐
  │ Is R == 0? │  (Diamond)
  └──┬──────┬──┘
   Yes    No
    ↓      ↓
  ┌─────┐ ┌─────┐
  │Even │ │ Odd │  (Parallelograms)
  └──┬──┘ └──┬──┘
     └───┬───┘
         ↓
     ┌───────┐
     │ Stop  │  (Oval)
     └───────┘

Flowchart Symbols Quick Reference

Submission Format

Evaluation Criteria (Total: 100 Marks)

Tips for Success

Common Mistakes to Avoid

Did You Know?

Bonus Challenges (Optional)

Frequently Asked Questions

Q1. Can I use pen for flowcharts?

Pencil is recommended so you can erase mistakes. Use pen for final version.

Q2. Should I use a ruler?

Yes, use ruler for straight lines and arrows. Keeps flowchart neat.

Q3. How big should symbols be?

Big enough to write text clearly inside. About 3-4 cm wide works well.

Q4. Can I use a template or flowchart software?

Ask your teacher. Hand-drawn is usually preferred, but software like Draw.io works too.

Q5. What if my algorithm has more steps?

No problem! Use as many steps as needed. Just make each step clear.

Q6. Should I number the steps?

Yes! Number each step (Step 1, Step 2...) or use bullet points. Makes it easy to follow.

Q7. Do I need to write test cases?

Not required, but showing 2-3 test cases can earn extra marks and demonstrate understanding.

Q8. What if I make a mistake in the flowchart?

Erase and redo. Or use whitener. Keep flowchart clean and readable.