Smart Pointer

Smart pointer types in C++

Author: hhuseyn1

Debtor 2/Debtor 2.cpp

@@ -0,0 +1,164 @@
+#include <iostream>
+using namespace std;
+
+//Smart Pointers
+//auto_ptr
+ 
+//weak_ptr
+//unique_ptr
+//shared_ptr
+
+class Entity {
+    int _value;
+public:
+    Entity(int value) { _value = value;
+    cout << "Konstructor" << endl; }
+    void doSomething() { cout << "Do something" << endl; }
+    ~Entity(){ cout << "Destructor" << endl; }
+
+};
+
+void foo(Entity obj) {
+    cout << "foo function" << endl;
+}
+
+template <typename T>
+class SmartPointer {
+    T* _ptr;
+public:
+    SmartPointer(T* ptr=NULL){
+        cout << "Constructor->" << endl;
+        _ptr = ptr;
+    }
+
+    void reset() {
+        delete _ptr;
+        _ptr = NULL;
+    }
+
+    void relaese() {
+        _ptr = NULL;
+    }
+
+    T* get() {
+        return _ptr;
+    }
+
+
+    SmartPointer(SmartPointer<T>& right) noexcept {
+        cout << "Copy ConstructorS\n";
+        _ptr = right._ptr;
+        right._ptr = NULL;
+
+    }
+
+    SmartPointer<T>& operator=(SmartPointer<T>& right) noexcept {
+        cout << "Copy Assign Operator\n";
+        _ptr = right._ptr;
+        right._ptr = NULL;
+        return *this;
+    }
+
+
+    T& operator*() {
+        return *_ptr;
+    }
+
+    T& operator->() {
+        return _ptr;
+    }
+
+    ~SmartPointer(){
+        cout << "Destructor->" << endl;
+        delete _ptr;
+    }
+    
+};
+
+class Rectangle { 
+int length; 
+int breadth; 
+
+public:
+    Rectangle() = default;
+    Rectangle(int l, int b){  
+        length = l;
+        breadth = b;
+    }
+
+    int getArea(){
+        return length * breadth;
+    }
+
+    
+};
+
+
+
+int main(){
+
+
+    {
+       /* auto ptrEnt = new Entity(10);
+        auto_ptr<Entity>ptr(ptrEnt);
+        (*ptr).doSomething();
+     */
+        //ptr.reset();
+        //ptr.relase();
+        
+
+    //auto_ptr<Entity>ptr1(new Entity(10));//ekvivalenti-> int* ptr
+
+    /*auto_ptr<int>ptr1(new int(42));
+    auto_ptr<int>ptr2 = ptr1;
+
+
+    Entity* ptr = ptr1.get();
+    (*ptr).doSomething();*/
+
+   /* int* ptr1 = new int(42);
+    int* ptr2 = ptr1;
+
+    delete ptr1;*/
+    
+   /* Entity e;
+    foo(e);*/
+    }
+        
+    {
+
+        //unique_ptr<Rectangle> P1(new Rectangle(20, 5));
+        //cout << P1->getArea() << endl; 
+
+        //// unique_ptr<Rectangle> P2(P1);  
+        //unique_ptr<Rectangle> P2;
+        //
+        //P2 = move(P1);
+        //cout << P2->getArea() << endl;
+
+
+    }
+    
+    {
+        shared_ptr<Rectangle> P1(new Rectangle(20, 5)); // create shared //ptr P1  
+
+        cout << P1->getArea() << endl;
+        
+        shared_ptr<Rectangle> P2;
+        P2 = P1;
+
+       
+        cout << P2->getArea() << endl;
+
+         
+        cout << P1->getArea() << endl;
+
+    
+        cout << P1.use_count() << endl;   
+
+    }
+    
+
+
+}
+ 

Debtor 2/Debtor.h

@@ -21,8 +21,8 @@
   <PropertyGroup Label="Globals">
     <VCProjectVersion>16.0</VCProjectVersion>
     <Keyword>Win32Proj</Keyword>
-    <ProjectGuid>{de5562ea-e29d-42d4-b843-60c72d309b48}</ProjectGuid>
-    <RootNamespace>Debtor2</RootNamespace>
+    <ProjectGuid>{c404e06f-d2f8-4b63-a717-d4ee884da39e}</ProjectGuid>
+    <RootNamespace>SmartPointer</RootNamespace>
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
@@ -127,10 +127,7 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="Debtor 2.cpp" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="Debtor.h" />
+    <ClCompile Include="Smart Pointer.cpp" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

Smart Pointer/Smart Pointer.cpp

@@ -15,13 +15,8 @@
     </Filter>
   </ItemGroup>
   <ItemGroup>
-    <ClCompile Include="Debtor 2.cpp">
+    <ClCompile Include="Smart Pointer.cpp">
       <Filter>Kaynak Dosyalar</Filter>
     </ClCompile>
   </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="Debtor.h">
-      <Filter>Kaynak Dosyalar</Filter>
-    </ClInclude>
-  </ItemGroup>
 </Project>

Debtor 2/Debtor 2.vcxproj Smart Pointer/Smart Pointer.vcxproj

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project>
+  <ProjectOutputs>
+    <ProjectOutput>
+      <FullPath>C:\Users\LEGION\source\repos\Smart Pointer\x64\Debug\Smart Pointer.exe</FullPath>
+    </ProjectOutput>
+  </ProjectOutputs>
+  <ContentFiles />
+  <SatelliteDlls />
+  <NonRecipeFileRefs />
+</Project>

Debtor 2/Debtor 2.vcxproj.filters Smart Pointer/Smart Pointer.vcxproj.filters

@@ -0,0 +1,2 @@
+  Smart Pointer.cpp
+  Smart Pointer.vcxproj -> C:\Users\LEGION\source\repos\Smart Pointer\x64\Debug\Smart Pointer.exe

Debtor 2/Debtor 2.vcxproj.user Smart Pointer/Smart Pointer.vcxproj.user

@@ -0,0 +1,2 @@
+PlatformToolSet=v143:VCToolArchitecture=Native64Bit:VCToolsVersion=14.32.31326:TargetPlatformVersion=10.0.19041.0:
+Debug|x64|C:\Users\LEGION\source\repos\Smart Pointer\|

Smart Pointer/x64/Debug/Smart Pointer.exe.recipe

@@ -0,0 +1 @@
+x64\Debug\\_IsIncrementalBuild