InterviewLab ← All questions
Question bank › Strings
Dsa Strings Warm-up

Count Vowels

Write a program that counts the number of vowels (a, e, i, o, u) in a given string. The program should be case-insensitive and should only count vowels. Output the total number of vowels found. Example: Input: "Hello, World!" Output: 3

Key concepts

stringscountingvowels

Practise this out loud — free

Start a mock interview on THIS exact question — a voice AI interviewer opens with it, pushes back like a real onsite, then hands you an instant scorecard.

🎙 Practise this question now
Part of InterviewLab's verified interview question bank. We show the prompt and concepts to practise with — never a copy-paste solution.