Use the generic copy to duplicate vectors : copy « STL Algorithms Non modifying sequence operations « C++ Tutorial

1. C++ Tutorial
2. STL Algorithms Non modifying sequence operations
3. copy

#include <iostream>
#include <cassert>
#include <algorithm>
#include <vector>
#include <string>
#include <iostream>
using namespace std;

int main()
{
  string s("abcdefghihklmnopqrstuvwxyz");

  vector<char> vector1(s.begin(), s.end());

  vector<char> vector2(vector1.size());

  // Copy vector1 to vector2:
  copy(vector1.begin(), vector1.end(), vector2.begin());

  assert (vector1 == vector2);

  vector<char>::iterator pos;

  for (pos=vector1.begin(); pos!=vector1.end(); ++pos) {
        cout << *pos << ' ';
  }
  cout << "\n\n\n\n";
  for (pos=vector2.begin(); pos!=vector2.end(); ++pos) {
        cout << *pos << ' ';
  }

  return 0;
}

a b c d e f g h i h k l m n o p q r s t u v w x y z



a b c d e f g h i h k l m n o p q r s t u v w x y z