wektor= {900,901,9

#include <vector>
#include <iostream>

using namespace std;

int main()
{
    vector < int > wektor= {900,901,902,903,904,905,906,907,908,909,};


    cout<<"[";
    for (vector<int>::const_iterator i = wektor.begin(); i != wektor.end(); ++i){

        cout<< *i << ',';

    }
    cout<<"]";


    for (unsigned i=0; i<wektor.size(); i++)
    wektor.at(i)=i;
    cout <<endl<< "wektor contains:";
    for (unsigned i=0; i<wektor.size(); i++)
        cout << ' ' << wektor.at(i);
        cout << '\n';

    return 0;
}