iterator & Generic Programming demo

#include <iostream>#include <vector>#include <algorithm>using namespace std;int main(){    vector<int> ivec { 1, 2, 100, 78, 89, 23 };    for (auto it = ivec.cbegin(); it != ivec.cend(); ++it)        cout << *it << " ";    cout << endl;    sort(ivec.begin(), ivec.end());    for (auto elem : ivec)        cout << elem << " ";    cout << endl;    return 0;}