/*
 Programmieren fuer Physiker: C++, SS10
 scope.cc
 Gueltigkeitsbereich von Variablen
*/

#include <iostream>

using namespace std;

int x_global = 100;

int main() {

  int x_lokal1 = 25;
  int x_lokal2 = 50;

  cout << "x_lokal1 (aussen) = " << x_lokal1 << endl;
  cout << "x_lokal2 (aussen) = " << x_lokal2 << endl;
  cout << "x_global (aussen) = " << x_global << endl << endl;
  
  {
    int x_lokal1 = -30;
    int x_lokal3 = -10;
    
    cout << "x_lokal1 (innen) = " << x_lokal1 << endl;
    cout << "x_lokal2 (innen) = " << x_lokal2 << endl;
    cout << "x_lokal3 (innen) = " << x_lokal3 << endl;
    cout << "x_global (innen) = " << x_global << endl << endl;
  
    x_global = -1;
  }
  
  cout << "x_lokal1 (aussen) = " << x_lokal1 << endl;
  cout << "x_lokal2 (aussen) = " << x_lokal2 << endl;
  cout << "x_lokal3 (aussen)" << x_lokal3 << endl;
  cout << "x_global (aussen) = " << x_global << endl;
  
}