我们先来看看别人是怎么说转义字符的？

 

 这是我随便从两本书上截图来的，总的来说就是反斜杠加几个字符就是转义字符。

就问你晕不晕，斜杠加几个字符至少是两个字符，那还叫字符吗，那叫字符串吧，怎么取名转义字符？

于是我找外文是怎么说的。下图就是我找的外文：

然后我摘了几句如下： 

In our greeting string, we can see the \ndigraph, which represents the <newline> character to be output to the console.

从上面可以看出\n叫digraph。

Digraphs that appear in strings are also called escape sequences。

从上面可以看出digraph叫转义字符序列。

Even though escape sequences appear as two characters, they are actually a single, non-visible character. 

从上面可以看出转义序列以两个字符形式出现。

通过以上分析我们所说的转义字符其实叫转义字符序列，这样就通了。