Email Validation Check

2025/Oct/Nov·Variant 2

MEDIUMString Processing

Validate an email address by checking that it contains an @ symbol. Use the SUBSTRING function to inspect each character.

Input: A string representing the email address to check. Output: The original email address followed by " is valid" or " is NOT valid".

Example:

Input:  hello@world.com
Output: hello@world.com is valid

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Sample Test Cases

Test 1: Valid email

Inputs: hello@world.com

Expected: hello@world.com is valid

Test 2: Missing @ symbol

Inputs: no_at_symbol.com

Expected: no_at_symbol.com is NOT valid

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