how to interpret symbol_strtab + symbol.st_name with elf.h, libelf.h...

[li chunhui <lichunhui2001@xxxxxxxxx>]

Hello gcc experts,

  Here I'm wondering if you may give me some helpful
hints to interpret strTab+sym.st_name, any help from
you will be greatly appreciated!
  
  I use strTab+sym.st_name, get function names like:
  _Z17print_stack_traceP8_IO_FILES0_Pmbb

  Here I only want the function name
"print_stack_trace"
  do you know any API/data-structure to further
distinguish the contents in strTab, sym.st_name?

Thanks!
Chunhui