Vector and sort

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

vector <int> v(3);
vector <int> v2(3);
int main()
{
    v[0] = 102;
    v[1]= 100;
    v[2]= 22;
    v.push_back(3000);
    for(int i =0; i < v.size(); i++)
    {
        cout << v[i] << endl;
    }

    cout << "---- sorting --- " << endl;

    for(int i =0; i<v.size(); i++)
    {
         sort(v.begin(), v.end());

    }
    for(int i =0; i<v.size(); i++)
    {
        cout << v[i] << endl;
    }
    v.clear();
    for(int i =0; i<v.size(); i++)
    {
        cout << v[i] << " vector after clear" << endl;
    }


}