#include "Riostream.h"
void basic () {

    TString dir = gSystem->UnixPathName(gInterpreter->GetCurrentMacroName());
    dir.ReplaceAll("basic.C","");
    dir.ReplaceAll("/./","/");
    ifstream in;
    in.open(Form("%sadc.dat",dir.Data()));

    Float_t x,adc;
    Int_t nlines = 0;
    Int_t channels;
    TFile *f = new TFile("basic.root","RECREATE");
    TTree *data1 = new TTree("data1","Data from ADC2249");
    data1->Branch("adc",&adc,"adc/F");
    data1->Branch("channels",&channels,"channel/I");
    // TH2F *h1 = new TH2F("h1","counts per channel",50,0,1200,20,0,36000);

    while(1) {
        in >> x;
        if (!in.good()) break;
        adc = x;
        channels = 1+nlines;
        data1->Fill();
        nlines++;
    }

    printf(" found %d points\n",nlines);

    in.close();

    // h1->Fill("adc:channels");
    f->Write();
    // h1->Draw("e");
}