Re: STL iterator question

Thank you very much, RaZiel and Victor Bazarov.

Both of your solutions, which I reproduce below in miniprograms to
eliminate other possible causes, give the same compiler error, which I
do not understand:

[C++ Error] wisseldata.cpp(16): E2034 Cannot convert 'const int *' to
'int *'

----------------------------------------
#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
using namespace std;

int main()
{
     set<vector<int> > svint;
     int a[] = {1,2,3};
     vector<int> vint(a,a+3);
     svint.insert(vint);
     for (set<vector<int> >::iterator svi = svint.begin();
             svi != svint.end(); ++svi)
     {
         for (vector<int>::iterator vi = svi->begin();
                 vi != svi->end(); ++vi)
             cout << *vi << " ";
         cout << endl;
     }
     return 0;
}
-------------------------------------------
#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
using namespace std;

int main()
{
     set<vector<int> > svint;
     int a[] = {1,2,3};
     vector<int> vint (a, a+3);
     svint.insert (vint);
     for (set<vector<int> >::iterator svi = svint.begin();
             svi != svint.end(); ++svi)
     {
         const vector<int>& vv = *svi;
         for (vector<int>::iterator vi = vv.begin();
              vi != vv.end(); ++vi)
             cout << *vi << ' ';
         cout << endl;
     }
     return 0;
}

T.