What does '\n' mean in c++

In C, '\n' is an escape character that represents a newline character, which moves the cursor to the next line during output or display. Its uses include: 1. Output newline; 2. Input skip; 3. File reading and writing (representing line separators in text files).

The meaning of '\n' in C

In C, '\n' is an escape character, representing a newline character. It is a non-printable character that moves the output cursor to the next line when printing or displaying a string containing '\n'.

'\n' uses include:

• Output line breaks: Use '\n' in a string to force line breaks when printing or displaying. For example, the following code will print two lines of text:

<code class="cpp">cout << "第一行" << '\n';
cout << "第二行";</code>

• Input skip: When reading input, '\n' represents the end of a line that has been entered. When the user presses the Enter key, the input stream will contain a '\n' character.
• File reading and writing: In file processing, '\n' is used to represent the line separator in text files. It can be used to read, write or search for newline characters.

It should be noted that the actual representation of '\n' depends on the operating system and character set. In Windows, '\n' means carriage return line feed (CRLF), i.e. "\r\n". On Unix and macOS systems, '\n' represents the newline character (LF).

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