What tools and constructs of C++ language have you used in your practice?

In practice, the following tools and constructs are often used in C++:

• Classes and objects for modeling entities.
• Constructors and destructors for managing the lifecycle of objects.
• Encapsulation using access modifiers (private, protected, public).
• Inheritance and polymorphism to extend functionality.
• Templates for creating generic functions and classes.
• Exceptions (try-catch) for error handling.
• Standard Library (STL): containers (vector, map, set), algorithms, iterators.
• Smart pointers (std::unique_ptr, std::shared_ptr) for memory management.
• Lambda expressions for convenient function passing.

Example of using a template and a smart pointer:

#include <iostream>
#include <memory>

template<typename T>
void printValue(const T& value) {
    std::cout << value << std::endl;
}

int main() {
    std::unique_ptr<int> ptr = std::make_unique<int>(42);
    printValue(*ptr);
    return 0;
}