C++ online test: advanced concepts practice
Quick, free C++ coding test with instant feedback and scoring.
This C++ quiz helps you check advanced skills with templates, STL, memory, and concurrency through timed questions and code tasks. You will get instant results with brief explanations to spot gaps fast. If you want a refresher first, try our c coding test or take a broader C programming quiz to warm up.
Study Outcomes
- Analyze Advanced Template Patterns -
Dissect and understand complex C++ templates by solving specialized questions in this C++ test, ensuring you can leverage generic programming effectively.
- Apply Dynamic Memory Management Strategies -
Master allocation, deallocation, and smart pointer usage through targeted scenarios in our C++ online exam to prevent leaks and dangling pointers.
- Implement Robust OOP Design Principles -
Create and assess class hierarchies, inheritance models, and design patterns in this C++ coding test to build scalable, maintainable software.
- Debug and Optimize C++ Code -
Use real-world challenges from our cpp online test to identify performance bottlenecks and apply best practices for clean, efficient code.
- Evaluate Standard Library Utilities -
Leverage STL containers, algorithms, and iterators effectively by answering targeted questions in this C++ exam, enhancing productivity.
- Interpret Instant Feedback to Improve Skills -
Analyze your results from this free C++ test to pinpoint strengths and weaknesses, guiding your ongoing learning path.
Cheat Sheet
- Template Metaprogramming & Type Deduction -
Understand how templates enable generic programming by allowing functions and classes to operate with any data type, as detailed on cppreference.com. Remember the rule "auto & T = deduced type" to predict type deduction, and practice with examples like `template<typename T> T add(T a, T b){ return a + b; }`. Reviewing SFINAE (Substitution Failure Is Not An Error) from the ISO C++ standard can help you master compile-time logic.
- RAII & Smart Pointers -
Master Resource Acquisition Is Initialization (RAII) by always tying resource lifetimes to object scope, a pattern promoted by Bjarne Stroustrup at Texas A&M University. Practice using `std::unique_ptr` for exclusive ownership and `std::shared_ptr` for shared ownership instead of raw `new`/`delete`. A good mnemonic is "Smart pointers run, raw pointers ruin" to reinforce modern C++ safety.
- Move Semantics & Perfect Forwarding -
Dive into rvalue references (`T&&`) to implement efficient move constructors and avoid unnecessary copies, as explained in Herb Sutter's C++ Core Guidelines. Use `std::move` to cast to an rvalue reference and `std::forward` to preserve value categories in forwarding functions. Remember the phrase "move to improve" when optimizing container operations or large-object transfers.
- Virtual Functions & Polymorphism -
Review how virtual tables (vtables) support runtime polymorphism, enabling dynamic dispatch for overridden methods in derived classes, as taught in MIT's 6.096 Learning C++ course. Ensure base classes have a `virtual` destructor to avoid undefined behavior when deleting derived objects through base pointers. A simple pattern is "public interface, private implementation" to keep class hierarchies clean and maintainable.
- Concurrency & Thread Safety -
Familiarize yourself with the `
`, ` `, and ` ` libraries introduced in C++11 to write safe multithreaded code, following guidelines from the C++ Concurrency in Action book by Anthony Williams. Implement lock guards (`std::lock_guard`) to automatically manage mutexes and prevent deadlocks. Keep in mind the "CRA" mnemonic - Critical section, RAII, Atomic operations - to structure reliable concurrent algorithms.
