I am currently interested in implementing statistical measures. Other measures like mean, variance, and covariance are easy, but the mode feels harder than I thought. Is this good enough?

Note: `float` is used because I don't really intend to use it on big enough numbers. The size can be changed if needed.

```c++
#include <iostream>

using std::cout;
using std::cin;

int main () {
    int N, uniques = 0, j = 0;
    // N: number of elements; uniques: unique elements in list; j: list index
    cin >> N;

    float list[N], counters[N][2];
    // list[N]: the list of elements
    // counters[N][2]: the list of unique elements and the number of appearances
    bool found = false;

    for (int i = 0; i < N; i++) {
        cin >> list[i];
        found = false;

        for (j = 0; j < uniques; j++) {
            if (counters[j][0] == list[i]) {
                counters[j][1]++;
                found = true;
                break;
            }
        }
        if (!found) {
            counters[uniques][0] = list[i];
            counters[uniques][1] = 1;
            uniques++;
        }
    }
    int max = counters[0][1], ind = 0, reps = 0;

    for (int k = 0; k < uniques; k++) {
        if (max == counters[k][1]) {
            reps++;
        } else if (max < counters[k][1]) {
            ind = k, max = counters[k][1];
            reps = 1;
        }
    }

    if (reps == 1) {
        cout << "The mode of the data set is " << counters[ind][0] << " appearing " << max << " times";
    } else {
        cout << "undetermined " << reps;
    }
    return 0;
}
```

---
I added comments about the variable names.