std::shared_ptr 和普通指针的转换

相互转化见示例

 struct test
 {
      int num;
      string name;
 };

 test* pTest = new test();
 std::shared_ptr<test> ptr_test = std::shared_ptr<test>(pTest); //普通指针转shared_ptr

 std::shared_ptr<test> ptr_test2 = std::make_shared<test>();
 test* pTest2 = ptr_test2.get(); //shared_ptr转普通指针