#include <iostream>
#include <string>

#include <X11/Xlib.h>

int main()
{
  Display* d = XOpenDisplay(0);
  Window root = XDefaultRootWindow(d);

  // this is the static version of the program which must be changed, to be configurable
  const unsigned char* newNames = (const unsigned char*) "as\0df\0";  // \0 seperated list of the new names (i.e. in this case first desktop is named "as" and second "df"
  int newNamesLength = 6; // 6 characters - including all the \0
  // end of the static stuff which should be made configurable

  // if you have correctly initialized the variables newNames and newNamesLength, then the next command will just update your desktop names...
  XChangeProperty(d, root, XInternAtom(d, "_NET_DESKTOP_NAMES", false), XInternAtom(d, "UTF8_STRING", false), 8, PropModeReplace, newNames, newNamesLength);
  XCloseDisplay(d);
  return 0;
}