//Version 1.0

using namespace std;

#include <fstream>
#include <iostream>
#include <iomanip>
#include <cmath>
#include <string>
#include <string.h>
#include <vector>
#include <stdlib.h>

#include "TROOT.h"
#include "TApplication.h"
#include "TCanvas.h"
#include "TPaveText.h"
#include "TPad.h"
#include "TStyle.h"
#include "TFrame.h"
#include "TH1D.h"


//=====================================================================
int main(int argc, char **argv)
{
TApplication     theApp("App", &argc, argv);
int              i;
double           factor = 1.0;


gROOT->Reset();

// --------- Create two histograms ---------------------------------------
const int    NBINS = 5;
const double LOW   = 0.0; const double HIGH = 300.0;
TH1D* hi1 = new TH1D("hi1", "The first distribution", 
                     NBINS, LOW, HIGH);
hi1->SetLineColor(kGreen); hi1->SetLineWidth(3);
hi1->GetXaxis()->SetTitle("Number");

TH1D* hi2 = new TH1D("hi2", "The second distribution", 
                     NBINS, LOW, HIGH);
hi2->SetLineColor(kBlue); hi2->SetLineWidth(5);
hi2->GetXaxis()->SetTitle("Number");

// ----- Fill the first histogram ---------------------------------------
for(i=0; i<800; i++) hi1->Fill(HIGH*fabs(cos(i*4040.40)));

// ------ Create and configure two canvases -------------------------
const unsigned int H = 800, V = 600;
const unsigned int XC1=80, YC1=80, XC2=XC1+H, YC2=YC1+V;
TCanvas* c1 = new TCanvas("c1","This is canvas 1", XC1, YC1, XC2, YC2);
TCanvas* c2 = new TCanvas("c2","This is canvas 2", XC1, YC1, XC2, YC2);

c1->cd();
c1->SetFillColor(kYellow-10);
c1->SetFrameFillColor(10);;
c1->GetFrame()->SetFillColor(kWhite);
c1->GetFrame()->SetBorderSize(0);
c1->GetFrame()->SetBorderMode(-1);

c2->cd();
c2->SetFillColor(kBlue-10);
c2->SetFrameFillColor(10);;
c2->GetFrame()->SetFillColor(kWhite);
c2->GetFrame()->SetBorderSize(0);
c2->GetFrame()->SetBorderMode(-1);

// ----------- Draw the histogram in the first canvas -----------------
c1->cd(); hi1->Draw();

// ---- Input the factor and fill the second histogram  ---------------
cout << "Enter the factor:  "; cin >> factor;
for(i=0; i<800; i++) hi2->Fill(HIGH*fabs(cos(i*factor/4040.40)));


// -------Draw the second histogram in the second canvas -----------
c2->cd(); hi2->Draw();

c1->Modified(); c1->Update();
c2->Modified(); c2->Update();

theApp.Run();
return 0;
}  //  End of main()