Create Proxy Pattern

Signed-off-by: Junzhuo Du <[email protected]>

StructuralPatterns/proxy/Proxy.cxx

@@ -0,0 +1,54 @@
+/*
+ * C++ Design Patterns:
+ * Author: Junzhuo Du [github.com/Junzhuodu]
+ * 2020
+ *
+ */
+
+#include <iostream>
+
+class Subject {
+public:
+  virtual ~Subject() {}
+
+  virtual void request() = 0;
+};
+
+class RealSubject : public Subject {
+public:
+  void request() {
+    std::cout << "RealSubject Request" << std::endl;
+  }
+};
+
+class Proxy : public Subject
+{
+public:
+  Proxy()
+  {
+    subject = new RealSubject();
+  }
+
+  ~Proxy()
+  {
+    delete subject;
+  }
+
+  void request()
+  {
+    subject->request();
+  }
+
+private:
+  RealSubject *subject;
+};
+
+
+int main()
+{
+  Proxy *proxy = new Proxy();
+  proxy->request();
+
+  delete proxy;
+  return 0;
+}