ATL / WTL / STL

int i = 0;
std::vector<std::string> str_vect1;
std::vector<std::string> str_vect2;
std::vector<std::string>::iterator it1;
std::vector<std::string>::iterator it2;

// GET str_vect1
str_vect1.resize(5);
for(it1 = str_vect1.begin(), i = 0; it1 != str_vect1.end(); it1++, i++)
{
    cout << "str_vect1[" << i << "] = ";
    cin >> *it1;
}

// COPY str_vect1 into str_vect2
str_vect2.resize(str_vect1.size());
for(it1 = str_vect1.begin(), it2 = str_vect2.begin(); it1 != str_vect1.end(); it1++, it2++)
{
    *it2 = *it1;
}

// SHOW str_vect2
for(it2 = str_vect2.begin(), i = 0; it2 != str_vect2.end(); it2++, i++)
{
    cout << "str_vect2[" << i << "] = " << *it2 << endl;;
}

// get a sum of the results from calling a single member function on each element
int sum = 0;
for (myIterator it = sv.begin(); it != sv.end(); it++)
{
  sum+=(*it).GetValue();
}

// something like...
int sum = std::accumulate(sv.begin(), sv.end(), 0, some_way_to_call_GetValue()_on_the_current_item);