Character combinations consisting of a backslash (\) followed by a letter or by a combination of digits are called "escape sequences." To represent a newline character, single quotation , or certain other characters in a character constant, you must use escape sequences. An escape sequence is regarded as a single character and is therefore valid as a character constant. Escape sequences are typically used to specify actions such as carriage returns and tab movements on terminals and printers. They are also used to provide literal representations of nonprinting characters and characters that usually have special meanings, such as the double quotation ("). The following table lists the ANSI escape sequences and what they represent.Note that the question preceded by a backslash (\?) specifies a literal question in cases where the character sequence would be misinterpreted as a trigraph.
我想问的是 m_forwardChannelTable应该是一个数组
对数组的访问通常是m_forwardChannelTable[1] 也就是index 是一个数值型的数据
但此处是'\1'
我想问，'\1'是一个字符,还是有别的什么含义