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--- cpp:friend_methods [2017/04/20 15:51] – [Φιλικές Κλάσεις] gthanos
+++ cpp:friend_methods [2017/04/20 15:57] – [Φιλικές Κλάσεις] gthanos
@@ Line 84: / Line 84: @@
 class Cuboid {
-  Rectangle r;
+  Rectangle rect;
   int length;
 public:
-  void modifyDimensions(int dw, int dh, int dl) {
+  Cuboid(Rectangle r, int l);
-    r.width += dw;
+  int volume();
-    r.height += dh;
+}
-    length += dl;
-  }
+Cuboid::Cuboid(Rectangle r, int l) {
+  rect = r; length = l;
+}
+int Cuboid::volume() {
+  return r.width * r.height * length;
+}
+</code>
+<code cpp CuboidUsage.cpp>
+#include <iostream>
+int main() {
+  Rectangle rectangle(5,6);
+  Cuboid cuboid(r, 10);
+  cout << "volume: " << cuboid.volume() << endl;
 }
 </code>