Sort names in alphabetical order

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int main()
{
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif

    int n;
    cin >> n;
    string names[n];
    for(int i=0;i<n;i++)
        cin >> names[i];
    for(int i=0;i<n-1;i++)
    {
        int key=i;
        for(int j=i+1;j<n;j++)
            if(names[j]<names[key])
                key = j;
        swap(names[key],names[i]);
    }
    for(int i=0;i<n;i++)
        cout << names[i] << " ";
    cout << endl;

    return 0;
}