Interview trainer · AI grading

Prep for interviews in the right way.

More than 5000 questions across C++, C#, Java, Python, Go, JavaScript, TypeScript, and Unreal Engine — two training modes. Quiz for fast theory drills, AI for free-form answers with rubric-based review. Pick a stack, a mode, a level — and go.

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5000+Questions in DB

17Stacks in production

AIRubric-based grading

∞Regular updates

cpp / simulator / memory-model

C++Middle

Explain RAII and why it's critical for exception safety.

Your answer · free formRAII is an idiom where resource ownership is bound to object lifetime. The constructor acquires, the destructor releases. That gives exception safety: during stack unwinding the destructors of local objects are guaranteed to run

AI · response reviewGrade8 / 10

RAII essencecorrect: lifetime-binding of the resource to the object.

Exception safetystack unwinding and the destructor guarantee — accurate.

Guarantee levelsshould name basic / strong / nothrow.

Move semanticsnot mentioned — how RAII lives with std::unique_ptr.

Question graph · progress

Every answer colors a node. The gaps stay grey.

Every question in the stack on one canvas. Node color is your last score, node size is difficulty. The grey patches are your plan for the week.

domain → topic → concept → question

Node color · your score

8–10Masteredno need to come back
5–7Solidholds up — spot-check it
3–4Shakycome back in a week
0–2Weakstart here
—Not attempteduncharted

Node size is question difficulty: junior → senior.

Open the graph

Two modes

Quiz for warmup. AI like a real interview.

Same question bank, two different trainers. Use them together: Quiz drills the theory, AI stress-tests it.

Mode 01 · Fast

Quiz

~60 sec / question

Classic multiple-choice test. Drill theory, find gaps, refresh definitions. Perfect before an AI session or between real interviews.

What does std::vector::push_back guarantee on reallocation?

APreserves pointers to elements

BInvalidates all iterators and pointers

CInvalidates iterators only

DDepends on the allocator

4 options · instant check
Streak counter, time, rating
5000+ questions · 20 stacks

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Mode 02 · Long-form

AI

~3 min / question

Write a long-form answer, like a real interview. The model reviews it against the level rubric: what counts, what is weak, what is missing. Targeted feedback — not just right/wrong.

Explain happens-before in the C++ memory model.

Your answerHappens-before is a partial order between operations. If A happens-before B, the side effects of A are visible in B…

Partial order Effect visibility synchronizes-with memory_order_*7 / 10

Free text + code blocks
Level-aware rubric (Junior / Middle / Senior)
Adaptive next question

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Knowledge · three pillars

Not just a trainer. A whole base around it.

The trainer works because under it sits a structured base. Roadmap walks the topic, Documentation explains it, Questions drill it. Free, regularly updated.

Roadmap

A dependency DAG for the stack: from basic types to the memory model and template magic. You see what to learn next — no guessing.

80+ topics · dependency graph
Junior → Middle → Senior
Per-node progress

C++UEGoOpen

Best practices

Idioms, guidelines, and anti-patterns. How to write code that passes review — and does not blow up in production.

RAII, ownership, const-correctness
Core Guidelines + production experience
Bad → good · side-by-side

C++C++ onlyOpen

Questions

5000+ interview questions with reviews. Filter by topic and level — read without a timer or run them through the trainer.

5000+ questions · 20 stacks
Reference answer + rubric
Direct entry to trainer

C++UEGoOpen