void loop(const char* filein="test.root"){ TFile* fin = new TFile(filein) ; if (!fin->IsOpen()) { printf("<E> Cannot open input file %s\n",filein) ; exit(1) ; } TList* list = fin->GetListOfKeys() ; if (!list) { printf("<E> No keys found in file\n") ; exit(1) ; } TIter next(list) ; TKey* key ; TObject* obj ; while ( key = (TKey*)next() ) { obj = key->ReadObj() ; if ( (strcmp(obj->IsA()->GetName(),"TProfile")!=0) && (!obj->InheritsFrom("TH2")) && (!obj->InheritsFrom("TH1")) ) { printf("<W> Object %s is not 1D or 2D histogram : " "will not be converted\n",obj->GetName()) ; } printf("Histo name:%s title:%s\n",obj->GetName(),obj->GetTitle()); }}