#include <iostream>

#include <iostream>是C++程序中常见的一条预处理指令，它包含了iostream库。iostream库定义了标准输入/输出流对象，包括ios、streambuf、istream、ostream和iosfwd等基本组件。这个库还包括了其他与流处理相关的类，例如std::stringstream、std::ifstream和std::ofstream等，用于处理字符串流、文件输入流和文件输出流等。通过包含<iostream>头文件，我们可以在C++程序中使用这些基本组件和类来进行输入和输出操作。\[1\]\[2\]\[3\]
#### 引用[.reference_title]
- *1* [C++1.1 #include＜iostream＞](https://blog.csdn.net/qq_45698096/article/details/113029079)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* *3* [#include＜iostream＞](https://blog.csdn.net/qq_21950671/article/details/130583379)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]