how to take unknown no of input in cpp

1#include<iostream>
2#include<vector>
3using namespace std;
4int main()
5{
6    int x;
7    vector<int> v;
8    while(cin>>x)
9    {
10        v.push_back(x);
11    }
12    for (int i = 0; i < v.size(); i++)
13        cout << v[i] << " ";
14    return 0;
15}