How to solve median without using vectors in C ?-CodePudding

I wanted to code a program to find the mean and median of a sorted array (so that I can do my maths homework faster) without using vectors. I wrote this program in HackerRank:

#include <bits/stdc  .h>
using namespace std;

int main() {
    int arr[2500],x;
    double sum, mean;
    cin>>x;

    //solving for mean
    for(int i = 0; i <= x; i  ) {
        cin>>arr[i];
    }
    sort(arr, arr   x);
    sum = 0.0;
    for (int i = 0; i <= (x-1); i  )
    {
        sum  = arr[i];
    }
    mean = sum/x;
    cout<<fixed<<setprecision(1)<<mean<<endl;


    //solving for median
    if (x%2==0)
    cout<<fixed<<setprecision(1)<<arr[x/2]<<endl;
    else 
    cout<<fixed<<setprecision(1)<<((arr[(x-1)/2]   arr[x/2])/2.0)<<endl;
    
    return 0;
}

So the input was:

10
64630 11735 14216 99233 14470 4978 73429 38120 51135 67060

And the output expected was:

43900.6
44627.5

But my output is:

43900.6
51135

I am unable to figure out the issue so please help