What does putchar("\n") mean?

What does putchar('\n') mean?

putchar('\n') means outputting a newline character, that is, realizing a carriage return Line break function.

Code analysis:

● putchar is a character output function, which can only output one character at a time. For example:

putchar('a'); // 输出字符'a' putchar('abc'); // 输出字符'c' ，多个字符时输出最后一个字符

● '\n' is an escape character, representing a newline character

In C language, it starts with a backslash, followed by a character or a sequence of numbers To represent a character amount, called an escape character. There are mainly three forms:

1. Backslash followed by specific characters, such as '\n'

2. Backslash followed by 1 to 3 octal digits, such as ' \101'

3. A backslash followed by 1~2 hexadecimal digits (starting with x), such as '\x1A'

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