IFD:Acoustic Interfaces/introduction to c++: Difference between revisions

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          cout << "Thats the letter 'A': " << letter_A << endl;
          cout << text;
+        return 0;
+    }
+The code about classes and pointers:
+#include <iostream>
+    using namespace std;
+    class Point2D {
+        public:
+            Point2D(float newX, float newY){
+                _x = newX;
+                _y = newY;
+            };
+            float getX() {
+               return _x;
+            };
+            float getY() {
+               return _y;
+            };
+            void print() {
+                cout << "(" << getX() << ", " << getY()<< ")" << endl;
+            }
+        private:
+            float _x;
+            float _y;
+    };
+    int main()
+    {
+        Point2D point1(5,1);
+        Point2D point2(10,100);
+        Point2D point3(27,2);
+        point1.print();
+        point2.print();
+        int integerArray[5] = { 0,1,2,3,4 };
+        cout << "first element: " << integerArray[0] << endl;
+        Point2D pointArray[3] = {point1, point2, point3 };
+        pointArray[2].print();
+        // pointer version of the code
+        Point2D* p2d1_ptr = new Point2D(123, 234);
+        Point2D* p2d2_ptr = new Point2D(123, 234);
+        Point2D* p2d3_ptr = new Point2D(123, 234);
+        (*p2d1_ptr).print();
+        p2d1_ptr->print();
+        Point2D* point_ptr_Array[3] = {p2d1_ptr, p2d2_ptr, p2d3_ptr };
+        cout << "pointer address: " << point_ptr_Array[0] << "x component of the point at that address: " << point_ptr_Array[0]->getX()  << endl;
          return 0;
      }