Array Sort + Median

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main() {

    int a[] = {3, 4, 5, 1, 6};
    int size = sizeof(a)/sizeof(int);
    std::sort(&a[0], &a[size]);
    double median = size % 2 ? a[size / 2] : (a[size / 2 - 1] + a[size / 2]) / 2;

    cout << median << " ";

    return 0;
}