1 files changed, 31 insertions, 0 deletions
diff --git a/c,cc/shared_ptr.cc b/c,cc/shared_ptr.cc
new file mode 100644
index 0000000..4fb158e
--- /dev/null
+++ b/c,cc/shared_ptr.cc
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <memory>
+
+using namespace std;
+
+struct B {
+  B(int i) : m(i) {}
+  int m;
+};
+
+struct A {
+  shared_ptr<B> b;
+};
+
+int
+main(void)
+{
+  shared_ptr<B> x(new B(42));
+  A* a = new A;
+  A* c = new A;
+  a->b = x;
+  c->b = x;
+  cout << x.use_count() << endl;
+  delete a;
+  cout << x.use_count() << endl;
+  delete c;
+  cout << x.use_count() << endl;
+
+  return 0;
+}
+