Add examples for different utilities

cpplinker/10_debug_linker/math_lib.cpp

@@ -0,0 +1,40 @@
+#include "math_lib.hpp"
+#include <cmath>
+
+namespace Math {
+
+// --- Free functions ---
+
+double sqrt(double x) {
+    return std::sqrt(x);
+}
+
+double square(double x) {
+    return x * x;
+}
+
+double cube(double x) {
+    return x * x * x;
+}
+
+// --- Vector2D ---
+
+Vector2D::Vector2D(double x, double y) : x(x), y(y) {}
+
+double Vector2D::length() const {
+    return std::sqrt(x * x + y * y);
+}
+
+Vector2D Vector2D::add(const Vector2D& other) const {
+    return Vector2D(x + other.x, y + other.y);
+}
+
+Vector2D Vector2D::scale(double factor) const {
+    return Vector2D(x * factor, y * factor);
+}
+
+double Vector2D::dot(const Vector2D& other) const {
+    return x * other.x + y * other.y;
+}
+
+} // namespace Math