Having problems working with random_shuffle and vectors

So I'm using a book to teach myself C++ programming but the example it gives me for shuffling values in a vector is not actually shuffling the values in the vector and I have no clue why not. The code is as follows:

// High Scores
// Demonstrates algorithms

#include <iostream>
#include <vector>
#include <algorithm>
#include <ctime>
#include <cstdlib>

using namespace std;
int myrandom (int i) {return rand() % i;}

int main()
{
    vector<int>::const_iterator iter;

    cout << "Creating a list of scores.";
    vector<int> scores;
    scores.push_back(1500);
    scores.push_back(3500);
    scores.push_back(7500);

    cout << "\nHigh Scores:\n";
    for (iter = scores.begin(); iter != scores.end(); ++iter)
    {
        cout << *iter << endl;
    }

    cout << "\nFinding a score.";
    int score;
    cout << "\nEnter a score to find: ";
    cin >> score;
    iter = find(scores.begin(), scores.end(), score);
    if (iter != scores.end())
    {
        cout << "Score found.\n";
    }
    else
    {
        cout << "Score not found.\n";
    }

    cout << "\nRandomizing scores.";
    srand(static_cast<unsigned int>(time(0)));
    random_shuffle(scores.begin(), scores.end());
    cout << "\nHigh Scores:\n";
    for (iter = scores.begin(); iter != scores.end(); ++iter)
    {
        cout << *iter << endl;
    }

    cout << "\nSorting scores.";
    sort(scores.begin(), scores.end());
    cout << "\nHigh Scores:\n";
    for (iter = scores.begin(); iter != scores.end(); ++iter)
    {
        cout << *iter << endl;
    }

    return 0;
}

Anyone have any ideas?