You can also write numeric escape sequences using either octal or hexadecimal digits. An octal escape sequence takes one of the forms:
\d or \dd or \ddd The escape sequence yields a code value that is the numeric value of the 1-, 2-, or 3-digit octal number following the backslash (\). Each d can be any digit in the range 0-7.
A hexadecimal escape sequence takes one of the forms:
\xh or \xhh or ... The escape sequence yields a code value that is the numeric value of the arbitrary-length hexadecimal number following the backslash (\). Each h can be any decimal digit 0-9, or any of the letters a-f or A-F. The letters represent the digit values 10-15, where either a or A has the value 10.
楼主
标题置顶
标题高亮
