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Commit03edf9c2e760d2adedef8c4bf65b84be2a4b7515 (patch)
Author
 Angel Dimitriev <achi_d@abv.bg>
2020-03-15 21:23:01 +0200
Committer
 GitHub <noreply@github.com>
2020-03-15 21:23:01 +0200
Files258b9fca32a7235b9f9c426dc2e304e65fe91fd2
Object-oriented_programming_FMI-03edf9c2e760d2adedef8c4bf65b84be2a4b7515.tar
Object-oriented_programming_FMI-03edf9c2e760d2adedef8c4bf65b84be2a4b7515.tar.gz
Object-oriented_programming_FMI-03edf9c2e760d2adedef8c4bf65b84be2a4b7515.zip
Parenta40a0c1780af8c034fcc53c3e4e0312c9202652d (diff)
Create 1. auto_ptr.cpp
1 files changed, 49 insertions, 0 deletions
-rw-r--r--Smart_pointers/1. auto_ptr.cpp49
diff --git a/Smart_pointers/1. auto_ptr.cpp b/Smart_pointers/1. auto_ptr.cpp
new file mode 100644
index 0000000..bbafcd6
--- /dev/null
+++ b/Smart_pointers/1. auto_ptr.cpp
@@ -0,0 +1,49 @@
+
+#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()
+{
+ {
+ auto_ptr<Test> smart_pointer_1(new Test()); //Test()
+
+ Test* obj = smart_pointer_1.get(); //От тук иматаме достъп до паметта, към която сочи пойнтера.
+ //delete obj; // Това не трябва да се прави! smart_pointer_1 не знае, че паметта е освободена и ще се опита да я освободи, което ще доведе до грешка!
+
+ } //Test (Паметта се освобождава сама)
+
+ {
+ auto_ptr<Test> smart_pointer_2(new Test());
+
+
+ auto_ptr<Test> smart_pointer_3(smart_pointer_2);
+
+ smart_pointer_2.get(); // Това ще даде NULL, защото smart_pointer_3 "открадна" обекта на smart_pointer_2
+}
+
+
+ return 0;
+}