Changing code structure to cpp project.

CPP_Implementation/main.cpp

@@ -0,0 +1,17 @@
+#include <iostream>
+#include "apid_controller.h"
+
+const double Kp = 1.0, Ki = 0.1, Kd = 0.01, dt = 0.1;
+
+int main() {
+    aPIDController apid(Kp, Ki, Kd, dt);
+
+    double target = 1.0;
+    double measured_value = 0.0;
+
+    double control_signal = apid.update(target, measured_value);
+
+    std::cout << "Output: " << control_signal << std::endl;
+
+    return 0;
+}