#include <vector>
#include <algorithm>
#include <iostream.h>

using namespace std;

template <class T> void display(T &);
int doIt(int &);

int main() {

vector<int> v(20);
v[2] = -3;
v[5] = -2;
v[0] = 6;
v[1] = 5;
v[3] = 6;
v[4] = 7;
// cout << v[2] << endl<< endl;

display(v);

for_each(v.begin(), v.end(), doIt);

display(v);

sort(v.begin(), v.end());
display(v);

vector<int>::iterator vi;

vi = v.begin();

cout << endl << "Demo the Iterator object" << endl;

while (vi != v.end()) {
  cout << *vi << " / ";
  vi++; }
cout << endl;

return 0; }


template <class T> void display(T & v){
  for (int i=0 ; i < v.size(); i++)
    cout << v[i] << ' ';
  cout << endl; }


int doIt(int & n) {
  return n *= -1; }