Track 01 · Beginner · Free
C++17 foundations and object-oriented programming, line by line.
Phase 1 covers the toolchain, the core language, memory and RAII. Phase 2 adds encapsulation, inheritance, polymorphism, headers and error handling: the object model that ROS 2 is built on. Every lesson uses C++17 and puts a plain-English note under every line of code.
Prerequisite: None. A laptop and a terminal are enough.
You will be able to
GCC, Clang and MSVC; what happens between source code and a running program.
45–75 minOpen lessonThe four stages, .o object files, and why a missing definition is a linker error.
45–75 minOpen lessonStatements, int/double/bool/char, const, initialization and auto.
45–75 minOpen lesson// and /* */ comments, readable layout, and naming conventions used in ROS 2.
30–45 minOpen lessonPrinting, reading numbers, checking that input succeeded, and string streams.
45–75 minOpen lessonMaking decisions, comparing values, and the C++17 if-with-initializer.
45–75 minOpen lessonCounting loops, range-based for, conditions, break and continue.
45–75 minOpen lessonDeclaring and calling functions, default arguments, and overloads by parameter type.
45–75 minOpen lessonFixed-size arrays, why raw arrays are risky, and safe alternatives.
45–75 minOpen lessonAddresses, dereferencing, nullptr, references, and const references.
60–90 minOpen lessonWhere objects live, manual allocation, leaks and dangling pointers.
60–90 minOpen lessonBundling data and behaviour, public and private, constructors, const methods.
60–90 minOpen lessonAcquire in the constructor, release in the destructor, and stay leak-free.
60–90 minOpen lessonCalling the right function through a base pointer, override and virtual destructors.
60–90 minOpen lessonPure virtual functions, interface classes, and swapping real hardware for a fake.
45–75 minOpen lessonGiving your types +, ==, and << with clear, predictable meaning.
45–75 minOpen lessonAvoiding name clashes, using declarations, and the ROS 2 naming style.
30–45 minOpen lessonDeclarations in .hpp, definitions in .cpp, include guards and folder layout.
45–75 minOpen lessontry, catch, throw, exception types, and safe cleanup during unwinding.
45–75 minOpen lessonReturn codes, exceptions, std::optional results, and choosing between them.
45–75 minOpen lessonRead a robot telemetry file, compute min, max and mean per joint, and print a formatted report using std::string, std::array and streams.
std::ifstream in{"joints.csv"};
double torque{};
while (in >> torque) { peak = std::max(peak, torque); }A small class that validates target angles against per-axis limits, keeps its invariant private, and reports violations with a clear message.
class JointLimits {
public:
bool allows(int axis, double deg) const;
};An abstract MotorPort interface, a simulated motor for tests, and an application function that depends only on the interface.
class MotorPort {
public:
virtual ~MotorPort() = default;
virtual bool command(double torque) = 0;
};Free course
22 lessons · 2 phases · self-paced. Curriculum aligned with the ISO C++ reference material and verified September 2026.
ISO C++ resources