output is: Input some numbers and then end the input 3 4 5 end if I use 1st simple for loop, output is 5 if use 2nd one range for loop output is 5 5 5 why ?

gistfile1.cpp

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

main()
{
        vector<int> v;
        int number;
        auto c = 0;
        cout <<"Input some numbers and then end the input\n";
        while(cin>>number){
                v.push_back(number);
        c++;
        }
        //for(i = 0; i < c; i++)
        for(auto i : v)
                cout << v.at(2) << " ";

        cout << endl;


}