root mean square

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

// Function that Calculate Root Mean Square
float rmsValue(int arr[], int n)
{
    int square = 0;
    float mean = 0.0, root = 0.0;

    // Calculate square.
    for (int i = 0; i < n; i++) {
        square += pow(arr[i], 2);
    }

    // Calculate Mean.
    mean = (square / (float)(n));

    // Calculate Root.
    root = sqrt(mean);

    return root;
}

// Driver code
int main()
{
    int arr[] = { 10, 4, 6, 8 };
    int n = sizeof(arr) / sizeof(arr[0]);

    cout << rmsValue(arr, n);

    return 0;
}