From 0807aa304e771bf98274a305a258a9a9ba9d5cf7 Mon Sep 17 00:00:00 2001
From: Angel Dimitriev <achi_d@abv.bg>
Date: Sun, 15 Mar 2020 21:55:20 +0200
Subject: Create 2. shared_ptr.cpp

---
 Smart_pointers/2. shared_ptr.cpp | 60 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 Smart_pointers/2. shared_ptr.cpp

(limited to 'Smart_pointers')

diff --git a/Smart_pointers/2. shared_ptr.cpp b/Smart_pointers/2. shared_ptr.cpp
new file mode 100644
index 0000000..fc86905
--- /dev/null
+++ b/Smart_pointers/2. shared_ptr.cpp	
@@ -0,0 +1,60 @@
+/******************************************************************************
+
+                              Online C++ Compiler.
+               Code, Compile, Run and Debug C++ program online.
+Write your code in this editor and press "Run" button to compile and execute it.
+
+*******************************************************************************/
+
+#include <iostream>
+#include <memory> 
+
+using namespace std;
+
+class Test
+{
+public:
+  Test()
+  {
+      cout<<"Test()"<<endl;
+  }
+  Test(const Test& other)
+  {
+       cout<<"Copy constructor"<<endl;
+  }
+  Test& operator=(const Test& other)
+  {
+      cout<< "Assignment operator" <<endl;
+  }
+  ~Test()
+  {
+      cout<<"Detructor"<<endl;
+  }
+    
+};
+int main()
+{
+
+    
+	shared_ptr<Test> smart_pointer_1(new Test()); 
+		
+	cout<< smart_pointer_1.get() <<endl; //адресът на обекта.
+		
+	shared_ptr<Test> smart_pointer_2(smart_pointer_1); 
+		  
+	cout<< smart_pointer_1.get() << endl; //За разлика от uniqe_ptr тук smart_pointer_1 ПРОДЪЛЖАВА да сочи към обекта.  
+		    
+    cout << smart_pointer_2.use_count() << endl; //може да видим колко пойнтера са насочени към обекта.
+                                        // Обектът ще се изтрие, когато пойнтерите станат 0.
+
+    
+    {
+        shared_ptr<Test> smart_pointer_3 = smart_pointer_2;
+        
+        cout << smart_pointer_1.use_count() << endl; //3 пойнтера към обекта ни.
+        
+    }
+    cout << smart_pointer_1.use_count()  << endl; // 2, защото smart_pointer_3 вече го няма.
+    
+    return 0;
+} //тук изчезват пойнтерите -> броят им става 0 и обекта се изтрива(изтрива се от последния пойнтер преди да изчезне)
-- 
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