-_
--strip-underscores
    On some systems, both the C and C++ compilers put an underscore in front of every name.  For example,
    the  C  name  "foo"  gets  the  low-level  name  "_foo".  This option removes the initial underscore.
    Whether c++filt removes the underscore by default is target dependent.

-j
--java
    Prints demangled names using Java syntax.  The default is to use C++ syntax.

-n
--no-strip-underscores
    Do not remove the initial underscore.

-p
--no-params
    When demangling the name of a function, do not display the types of the function's parameters.

-s format
--format=format
    c++filt can decode various methods of mangling, used by different compilers.  The  argument  to  this
    option selects which method it uses:

--help
    Print a summary of the options to c++filt and exit.

--version
    Print the version number of c++filt and exit.