stream-oriented input/output

Text filtering is the process of taking an input stream of text and performing some conversion on the text before sending it to an output stream.

文本过滤指的是这样一个过程：获得文本的输入流，并在将文本发送给输出流之前对文本执行一些转换。

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Stream is an important concept of ( C++), it provides two operators ( < < and>>) to extract data from an input stream or put data into an output stream.

C++语言引入了一个抽象概念流来实现数据的输入输出，提供了功能强大的插入（）运算符。

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The other common operator for redirecting the standard streams is the| ( pipe) operator, which connects the standard output stream of the program on the left hand side to the standard input stream of the program on the right.

另一个常用于重定向标准流的操作符是（管道）操作符，它可以将左侧程序的标准输出流连接到右侧程序的标准输入流。

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The output stream of the socket becomes the input stream to the server application and vice-versa.

套接字的输出流将成为服务器应用程序的输入流，反之亦然。

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Otherwise, the original character is placed in the output stream, and the input stream is reset to the original position.

否则，将原来的字符放到输出流中，并且将输入流重置到原始位置。

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