[Solved] Analyze this pseudocode for updating a book record:if book_id exists: update book details return 'Updated' else: return 'Book not found'What will be the output if the book_id is invalid? | LLD

LLD - Design — Library Management System

Analyze this pseudocode for updating a book record:

if book_id exists:
    update book details
    return 'Updated'
else:
    return 'Book not found'

What will be the output if the book_id is invalid?

AUpdated

BBook not found

CError: Invalid input

DNo action taken

Step-by-Step Solution

Solution:

Step 1: Check book_id existence
The pseudocode first checks if the book_id exists in the system.
Step 2: Handle invalid book_id
If the book_id is invalid or does not exist, the else block executes, returning 'Book not found'.
Final Answer:
Book not found -> Option B
Quick Check:
Invalid book_id triggers else condition [OK]

Quick Trick: Invalid IDs return 'Book not found' message [OK]

Common Mistakes:

MISTAKES

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