#include <stdio.h>
#include <rpc/xdr.h>

int main() {
  XDR xdrh;
  FILE *fp;
  long val1 = 123;
  float val2 = 3.14;

  fp = fopen("/tmp/plik", "w");
  xdrstdio_create(&xdrh, fp, XDR_ENCODE);
  xdr_long(&xdrh, &val1);
  xdr_float(&xdrh, &val2);
  fclose(fp);
}