#include "TH1.h"
#include "TH2.h"
#include "TFile.h"
void test1() {

    TH1D* CS0 = (TH1D*) new TH1D("CS0", "CS0", 10, 0, 10);
    TH2D* CS1 = (TH2D*) new TH2D("CS1", "CS1", 50, -0.5, 4.5, 10, 0.5, 10.5);
    for(int i=1;i<3;i++)
        for(int j=0;j<100/i;j++) {
            CS0->Fill(i);
            CS1->Fill((double)j/4.,i);
        }
    TH1D* CS2 = CS1->ProjectionY("CS2", 0, -1, "");

    TFile* file0 = TFile::Open("CS0.root","recreate");
    CS0->Write();
    TFile* file2 = TFile::Open("CS2.root","recreate");
    CS2->Write();
}