diff --git a/.vimrc b/.vimrc
index 4e1836f..00447e6 100644
--- a/.vimrc
+++ b/.vimrc
@@ -19,6 +19,7 @@ set backspace=indent,eol,start
 color backbone
 set number
 nmap <F6> :set invlist<cr>
+set breakindent " https://www.linux.org.ru/forum/general/10615635?lastmod=1403800233259
 
 " Setup for the GNU coding format standard
 function! GnuIndent()
diff --git a/dev/cpp/virtual_destructor/virtual_destructor.cpp b/dev/cpp/virtual_destructor/virtual_destructor.cpp
new file mode 100644
index 0000000..680fc5f
--- /dev/null
+++ b/dev/cpp/virtual_destructor/virtual_destructor.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+
+using namespace std;
+
+class A1 {
+	public:
+		A1 () {
+			cout << "A1() called" << endl;
+		}
+
+		virtual ~A1 () { // won't be called if non-virtual
+			cout << "~A1() called" << endl;
+		}
+};
+
+class A2 : public A1 {
+	public:
+		A2 () {
+			cout << "A2() called" << endl;
+		}
+
+		~A2 () {
+			cout << "~A2() called" << endl;
+		}
+};
+
+int main (int argc, char *argv[])
+{
+	A1 *ap = new A2();
+	delete ap;
+}