What I run on Root after excuted the program: Chi^2:0, number of DoF: 16 (Probability: 1). root [1] TTree * myt = new TTree (TTree *) 0x7fa485495640 root [2] myt->SetScanField(0) root [3] .>myt-scan.txt myt->Scan("*"); .> root [6] .q What I get on txt file: root [4] myt->Scan("*"("*")("*"); ************ * Row * ************ ************ root [5] .>