在C++中，原始指针是指没有进行封装或管理的指针。它们与普通指针的区别在于，原始指针没有提供自动的内存管理功能，需要手动释放分配的内存空间。

原始指针的声明方式如下：

int* rawptr;

然而，在C++11中，推荐尽可能避免使用原始指针，而是使用std::unique_ptr进行替代。std::unique_ptr是C++标准库提供的智能指针，它提供了自动管理内存的功能，可以确保在不再使用指针时自动释放相关的内存空间。

关于std::unique_ptr::get方法，可以参考以下链接：

- [stackoverflow.com/questions/8719119](http://stackoverflow.com/questions/8719119)

- [stackoverflow.com/questions/8706192](http://stackoverflow.com/questions/8706192)

Raw pointers in C++ are a fundamental concept that is often used in low-level programming. They provide a way to directly manipulate memory addresses to access and manipulate data. However, they differ from normal pointers in terms of safety and convenience.

The main reason for the existence of raw pointers is the need for direct memory manipulation. In certain scenarios, such as when dealing with external libraries or hardware interfaces, it becomes necessary to work with memory at a lower level. Raw pointers allow developers to directly access and modify memory, which is crucial in such cases.

One major difference between raw pointers and normal pointers is the absence of automatic memory management. Normal pointers, also known as smart pointers, provide automatic memory management by using techniques like reference counting or garbage collection. This ensures that memory is automatically deallocated when it is no longer needed, avoiding issues like memory leaks. However, raw pointers do not provide this automatic memory management. It is the responsibility of the programmer to manually allocate and deallocate memory, which can be error-prone and potentially lead to memory leaks or other memory-related issues.

Here is an example of how a raw pointer can be used in C++:

int* rawPointer = new int; // allocate memory for an integer
*rawPointer = 42; // store a value in the allocated memory
std::cout << *rawPointer << std::endl; // output: 42
delete rawPointer; // deallocate the memory

In the above code, a raw pointer is declared and memory for an integer is allocated using the `new` keyword. The value 42 is then stored in the allocated memory location. Finally, the memory is deallocated using the `delete` keyword. It is important to note that failing to deallocate the memory would result in a memory leak.

To mitigate the risks associated with raw pointers, modern C++ provides alternative approaches like smart pointers. Smart pointers, such as `std::unique_ptr` and `std::shared_ptr`, provide automatic memory management while still allowing for direct memory manipulation when needed. These smart pointers use techniques like RAII (Resource Acquisition Is Initialization) to automatically deallocate memory when it is no longer needed. This helps prevent memory leaks and makes memory management safer and more convenient.

In conclusion, raw pointers in C++ are normal pointers that allow for direct memory manipulation. They are used in scenarios where low-level memory access is required. However, they differ from normal pointers in terms of safety and convenience, as they lack automatic memory management. To address these issues, modern C++ provides smart pointers as a safer and more convenient alternative.

C++中的裸指针是和普通指针完全相同的，它们的声明方式如下:

type * pointer_name = & variable_name;

自从C++11以后，我们引入了一些特殊的指针，被称为"智能指针"。它们之所以被称为"智能"，是因为它们知道何时应该删除已使用的内存。它们在程序中没有其他地方使用该内存块时才进行删除。C++11中有三种类型的智能指针:

unique_ptr<typename> pointer_name;
weak_ptr<typename> pointer_name;
shared_ptr<typename> pointer_name;

你可以在这里了解更多关于这些指针类型的使用方法。

"smart_ptr"？没听说过。那"unique_ptr"呢？

抱歉，感谢您的评论。我刚才想错了，那是我的错误结果。 :))