c++ #include <iostream>

在C++中，`#include <iostream>`是用来包含标准输入/输出流对象的头文件。 这个头文件定义了`iostream`对象，它包含了`ios`、`streambuf`、`istream`、`ostream`和`iosfwd`等其他头文件。通过包含`<iostream>`，我们可以使用C++标准库中的输入/输出功能。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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