Hello Guys,

I am developing some applications that extensively uses STL. I plan to use the
traits -> iterator_traits to get information about which type do I need to return.
Unfortunately, I've been experienced some problems to use such functionality.

This simple test code was extracted from the SGI-STL website, but oddly enough it doesn't compile:
#include <iostream>
#include <vector>
#include <iterator>
#include <algorithm>

template <class InputIterator>
last_value(InputIterator first, InputIterator last) {
std::iterator_traits<InputIterator>::value_type result = *first;
for (++first; first != last; ++first)
result = *first;
return result;

using namespace std;

int main()
std::vector<double> teste(10);
double result = last_value(teste.begin(),teste.end());
return 0;

The error response is:
argdeduction.cpp:8: error: expected constructor, destructor, or type conversion before ‘last_value’
argdeduction.cpp: In function ‘int main()’:
argdeduction.cpp:21: error: ‘last_value’ was not declared in this scope