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1. Check if Three Sides Form a Valid Triangle2. Determine Triangle Type3. Grade Calculator4. Check if One Number is Multiple of Other5. Time-based Greeting6. Check Voting Eligibility7. Check Even/Odd Pair8. Check Alphabet Range9. Print Day Name10. Days in Month

Grade Calculator

Take marks (0-100) and print the corresponding grade (A/B/C/D/F).

IntermediatePhase 1 - Level 2: Nested If & Multiple ConditionsExample 3 of 10
grade-calculator.py
1# Take marks as input
2marks = float(input("Enter marks (0-100): "))
3

4# Assign grade based on marks
5if marks >= 90:
6    print("Grade: A")
7elif marks >= 80:
8    print("Grade: B")
9elif marks >= 70:
10    print("Grade: C")
11elif marks >= 60:
12    print("Grade: D")
13else:
14    print("Grade: F")

Output

Enter marks (0-100): 85
Grade: B

Enter marks (0-100): 45
Grade: F

What's going on

Use elif chain to check marks in descending order.

Key Concepts:

Check ranges from highest to lowest
Once a condition matches, rest are skipped
Order matters: check >= 90 before >= 80

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