Module 7 Assignment 5.2 Answer

Programming for Everybody (Getting Started with Python) Module 7 Assignment 5.2 Answer.

Question: Find the Largest and Smallest Numbers

Instructions

Write a Python program that:

• Repeatedly prompts the user to enter integer numbers.
• Stops when the user enters "done".
• Ignores invalid inputs (like "bob") and displays "Invalid input".
• Finds and prints the largest and smallest numbers entered.

Test Input:

7, 2, bob, 10, 4, done

Expected Output:

Invalid input
Maximum is 10
Minimum is 2

Correct Python Code

# Initialize variables for largest and smallest numbers
largest = None
smallest = None

# Loop to take user input repeatedly
while True:
    num = input("Enter a number: ")
    
    if num == "done":
        break  # Exit loop if user enters 'done'
    
    try:
        n = int(num)  # Convert input to integer
        if largest is None or n > largest:
            largest = n  # Update largest number
        if smallest is None or n < smallest:
            smallest = n  # Update smallest number
    except ValueError:
        print("Invalid input")  # Handle non-numeric input

# Print the final results
print("Maximum is", largest)
print("Minimum is", smallest)

Explanation

1. Initialize variables largest and smallest to None.
2. Use a while True loop to repeatedly ask for user input.
3. Check if the input is "done", and break the loop if it is.
4. Try converting input to an integer:
   • If successful, update largest and smallest accordingly.
   • If unsuccessful (ValueError), print "Invalid input" and continue.
5. After exiting the loop, print the maximum and minimum values.

Why This Code is Correct

✅ Handles both valid and invalid inputs properly.
✅ Updates largest and smallest correctly.
✅ Matches exact expected output.
✅ Uses try/except to catch non-numeric inputs.

Expected Output for Test Case

Input Sequence:

7, 2, bob, 10, 4, done

Program Output:

Invalid input
Maximum is 10
Minimum is 2