#include <iostream>
#include <fstream>
#include <vector>
using namespace std;


// exemple ajout librairie externe en statique
#include "Lib.h"

 
void saveArray(int ifirst, vector<double> &x, vector<double> &u, int nx);
 
int main()
{

Lib uLib;
uLib.printLib();
 
  int nx = 101;
  int nt = 50;
  double dx = double(2)/(nx-1);
  int c = 1;
  double dt = dx/c*0.99;
 
  vector< double > x(nx);
  vector< double > u(nx);
  vector< double > un(nx);  
 
 for (int i=0; i <= nx-1; i++)
    {
	 x[i]=i*dx;
      if (i*dx >= 0.5 && i*dx <= 1)
    {
      u[i] = 2;
    }
      else
    {
      u[i] = 1;
    }
    }

   saveArray(1,x, u, nx);
   
  for (int it=1; it<=nt-1; it++)
    {
      for (int i=0; i<=nx-1; i++) un[i] = u[i];
      u[0] = un[1];
      for (int i=1; i<=nx-1; i++) u[i] = un[i] - c*dt/dx*(un[i]-un[i-1]);
//		cout<<u[0]<<endl;
    }
 
  saveArray(0,x, u, nx);
 
 cout<<" Normal End "<<endl;
  return 0;
}
 
void saveArray(int ifirst, vector<double> &x, vector<double> &u, int nx)
{
ofstream output;
  if(ifirst==1) output.open("xu.txt");
  if(ifirst==0) output.open("xu.txt",std::ios_base::app);
  for ( int j = 0; j < nx; j++ ) output << x[j] << " " <<u[j] << " " << ifirst << "\n";
    output << "\n";
output.close();
}