C++ 你如何使用 cout 输出 \ 符号？
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How do you output the \ symbol using cout?
提问by SomeUser
How do you output \ symbol using cout?
你如何使用 cout 输出 \ 符号？
回答by Daniel A. White
Use two backslashes \\
使用两个反斜杠 \\
回答by Tom
In addition to all the correct answers, see this for further escaped characters
除了所有正确答案外，请参阅此以了解更多转义字符
\a Bell (beep)
\b Backspace
\f Formfeed
\n Newline
\r Return
\t Tab
\ Backslash
\' Single quote
\" Double quote
\xdd Hexadecimal representation
\ddd Octal representation
\? Question mark ('?')
回答by mch
The '\' character is an escape character in C and C++. You can output a literal '\' by escaping it with itself:
'\' 字符是 C 和 C++ 中的转义字符。您可以通过将其转义来输出文字 '\'：
cout << "This is a backslash: \";
回答by SomeUser
Maybe
也许
cout << "\";
回答by sbi
std::cout << '\';
回答by Dharman
Since C++11 you can also use raw string literals.
从 C++11 开始，您还可以使用原始字符串文字。
std::cout << R"(There is no need to escape backslash here \)";
Escape characters (like \n \t or " ) are not processed in the raw string literals.
未在原始字符串文字中处理转义字符（如 \n \t 或 " ）。
回答by Mr_Tanki_Online_Pro_TO
cout << "\" << endl;
Instead of endl you could:
而不是 endl 你可以：
cout << "\ \n";
