STL unique_copy demo

#include <iostream>#include <list>#include <vector>#include <algorithm>using namespace std;int main(){list<int> ilst;cout << "Enter some numbers:" << endl;int val;while (cin >> val) {ilst.push_back(val);}vector<int> ivec;ilst.sort();unique_copy(ilst.begin(), ilst.end(), back_inserter(ivec));for (vector<int>::iterator it = ivec.begin(); it != ivec.end(); ++it){cout << *it << " ";}cout << endl;getchar();return 0;}