Terms of service

cppinterview provides C++ interview learning content and practice tools. You are responsible for accurate account information, protecting your sign-in credentials and activity carried out through your account.

Free includes public learning features, all Real-World C++ Interviews questions and answers, 10 selected Real-World lessons, and 30 AI requests per account/month. The allowance resets on the first day in Vietnam time and does not roll over. Premium unlocks all detailed Real-World lessons in Vietnamese and English, including additions during the paid period, and unlimited AI requests. Limits, features and content may be adjusted reasonably to protect the service; material changes will be communicated.

International card plans are collected by Lemon Squeezy in USD and renew monthly or yearly until cancelled. VND bank-QR plans are confirmed automatically by payOS, but you must actively pay for each new period. Applicable tax and the final total are shown before confirmation. There are no free trials or discount codes unless clearly announced.

After cancelling card renewal, Premium remains available through the paid period. When access expires or is validly revoked, Premium-only lessons are locked and AI uses the Free allowance for the current month. Questions, answers, the 10 free lessons, learning history and progress remain available under the Privacy policy.

You may not share accounts, scrape content, bypass access controls, redistribute Premium material, attack the service or use it unlawfully. You retain rights to content you submit; cppinterview and its licensors retain rights to the website, brand and learning material.

AI feedback may be inaccurate and is for learning only; verify it before relying on it. The service may be interrupted for maintenance, security or provider outages. To the extent allowed by law, cppinterview does not guarantee interview or employment outcomes and is not liable for indirect losses arising from use of the service.