Problems in vector sort in C++

problem on vector sort- click here
Solution :
Vector are sequence containers that can change in size. They represent arrays.
Code :
#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main(){
    vector<int> v; // this is how a vector is declared
    int n;
    int size;  // inputting the size of the vector array
    cin>>size;
    int i;
    for(i=0;i<size;i++){
        cin>>n;
        v.push_back(n);  // this functions pushes the data in the vector
    }
    sort(v.begin(), v.end()); // sort function defined in algorithm library
    for(i=0;i<size;i++){
        cout<<v[i]<<" ";  // outputting the vector elements
    }
    return 0;
}