#include <sys/stat.h>
#include <unistd.h>

void runone(int R, char fnam[], int MC){

  char run[128];
  sprintf(run,"0%d %d",R,MC);

  TFile *INF = new TFile(fnam);
  TTree *T = (TTree*)INF->Get("tof_eff");
  T->Process("analtof1.C+",run);

}

bool File_exists_test(char name[]) {
  struct stat buffer;   
  return (stat (name , &buffer) == 0); 
}

void doit(int R, int MC){

  char loc[128] = "./localdir/";
  char fnam[256];
  int k = R;
  sprintf(fnam,"%s/tree_tof_eff_%06d.root",loc,k);

  if (MC){
    sprintf(fnam,"%s/tree_tof_eff_bggen_run%06d.root",loc,k);
  }

  if (File_exists_test(fnam)){
    runone(k, fnam, MC);
  }

}