How do I design self-documenting interfaces in C++ projects?

        // Example of a self-documenting interface in C++

        class IShape {
        public:
            virtual ~IShape() = default;
            virtual double getArea() const = 0; // Clearly indicates the method's purpose
            virtual std::string getName() const = 0; // Discloses the name of the shape
        };

        class Circle : public IShape {
        public:
            Circle(double radius) : radius(radius) {}
            double getArea() const override {
                return 3.14159 * radius * radius; // Implementation of area calculation
            }
            std::string getName() const override {
                return "Circle"; // Provides a clear name descriptor
            }
        private:
            double radius;
        };

        class Square : public IShape {
        public:
            Square(double sideLength) : sideLength(sideLength) {}
            double getArea() const override {
                return sideLength * sideLength; // Implementation of area calculation
            }
            std::string getName() const override {
                return "Square"; // Provides a clear name descriptor
            }
        private:
            double sideLength;
        };