在C / C ++中编写非打印字符的行为是什么？ [英] What is the behavior of writing a non-printing character in C/C++?

问题描述

如果通过 printf / fprintf ？我很困惑，因为C标准N1570 / 5.2.2中的单词只讨论打印字符和字母转义序列的显示语义。

Is the behavior of writing a non-printing character undefined or implementation-defined, if the character is written via printf/fprintf? I am confused because the words in the C standard N1570/5.2.2 only talks about the display semantics for printing characters and alphabetic escape sequences.

此外，如果字符是通过 std :: ostream （仅限C ++）写的？

In addition, what if the character is written via std::ostream (C++ only)?

推荐答案

ASCII不可打印（控制）字符的输出是实现定义的。

The output of ASCII non-printable (control) characters is implementation defined.

具体来说，解释是输出设备的责任。

Specifically, interpretation is the responsibility of the output device.

编辑1：

输出设备作为文件打开时，可以打开二进制。当以二进制打开时，输出不会被翻译（例如行结尾）。

Edit 1:
When the output device is opened as a file, it can be opened as binary. When opened as binary the output is not translated (e.g. line endings).

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