Master hard C++ interview questions — visually.
Step-through animations of the exact questions Microsoft, Salesforce, Adobe, top banks and HFT firms ask. Watch each concept happen, at your own pace.
- ✓90+ animated lessons — core C++, concurrency, STL internals, system design & coding challenges
- ✓Every hard concept as an interactive animation: vtables, move semantics, lock-free queues, deadlock…
- ✓Real interview problems, tagged by company — Microsoft, Salesforce, Adobe and more
Already a member? Log in →
At compile time the compiler walks Shape's virtual functions in declaration order and reserves a fixed slot: area() -> [0], name() -> [1]. These indices are baked into the binary and never change.
See it, don't memorize it
Each concept is a step-through animation you control — the diagram morphs as the code runs.
Asked in real interviews
Built from 200+ interviews at Microsoft, Salesforce, Adobe, banks and HFT firms — tagged by company.
Senior-level depth
Not surface trivia — vtable layout, memory ordering, lock-free queues, RVO, the why behind every answer.
Everything a C++ interview throws at you
100+ animated lessons across core C++, concurrency, the STL, modern C++ (11 through 20), design patterns, system design and coding challenges — each built from real interview questions.
Core C++ & memory
vtables & virtual dispatch, object layout, RAII, the rule of 0/3/5, move semantics, copy elision/RVO, const-correctness and the process memory model.
Concurrency
threads, mutexes & condition variables, the C++ memory model & atomics, false sharing, deadlock's four conditions, producer–consumer and lock-free queues.
STL internals
how vector grows, map vs unordered_map, red-black trees, hash tables, small-string optimization, iterators and allocator basics.
Modern C++ (11→20)
smart pointers, lambdas, perfect forwarding, variadic templates, SFINAE & concepts, ranges, coroutines, std::span, std::optional and the spaceship operator.
Design patterns
all the GoF patterns plus SOLID — Singleton, Factory, Strategy, Observer, Visitor, Adapter, Decorator and more, in idiomatic C++.
Coding & system design
LeetCode-style C++ problems, rate limiters, LRU cache, key-value stores, an HFT order path, plus leadership & behavioral interview prep.
Frequently asked questions
What is C++ Interview Prep?
An animated C++ interview preparation site. Every hard concept — vtables, move semantics, lock-free queues, deadlock, STL internals, design patterns — is taught as an interactive step-through animation you control, based on the real questions asked at Microsoft, Salesforce, Adobe, top banks and HFT firms.
Which companies' interview questions are covered?
Questions are drawn from 200+ real interviews and tagged by company, including Microsoft, Salesforce, Adobe, FICO, major banks and high-frequency-trading firms, spanning core C++, concurrency, STL internals, system design and coding challenges.
Is it for beginners or senior engineers?
It targets senior-level depth — the 'why' behind every answer, from vtable layout and memory ordering to lock-free programming — but each concept is built up visually, so strong intermediate engineers can follow along too.
How are the lessons taught?
Each lesson is an explorable, step-through animation: the diagram morphs as the code runs and you control the pace with Next/scrub, instead of passively watching a video or memorizing bullet points.
Stop guessing. Start seeing how C++ really works.
Full access for ₹499 / month.
The people behind it
Promoter & Investor
Alok Chaturvedi
Promoter & Investor · Business & Product Leader
Business & product leader and investor with 16+ years in capital markets and fintech. Has built, scaled and owned the P&L for mobile-first stock broking, mutual fund, derivatives and wealth platforms serving millions of Indian investors — across HDFC Securities, Paytm Money, Estee and Reliance. Currently investing in and building WealthTech.
Companies
Focus areas
Certifications: NISM (Forward Markets & Products)
Your Instructor
Ashutosh Pandey
C++ Architect · HFT · Low-Latency & HPC · Capital Markets
Architect and owner of Dhansetu's end-to-end quant trading platform. 15+ years designing and building low-latency, multi-threaded backend systems on Linux and Windows for capital markets - HFT market-data pipelines, order books and backtesting engines in C++17/20, Python and PostgreSQL, with a relentless focus on latency, throughput and binary-data efficiency. These lessons distill the C++ I use and the questions I have been asked across 200+ interviews.
Companies
Low-Latency Programming
Certifications: C-DAC (Centre for Development of Advanced Computing) · NISM