The \v escape sequence is not a standard C escape sequence. It is not used to produce any specific output or behavior, it is not defined in the C standard.
It is not supported by the standard libraries, it will not work in the same way on all operating systems and terminals.
It is not recommended to use it in your C programs.
If you want to produce a vertical tab, you can use \n characters to move the cursor down one or more lines, or use specific libraries or functions provided by the operating system or terminal to move the cursor vertically.
