vlad.2

#include <iostream>
using namespace std;
double sr_otk(double* mas, int n) {
    double sred = 0;
    double sred_otk = 0;
    for (int i = 0; i < n; i++) {
        sred += mas[i];
    }
    sred = sred / n;
    for (int i = 0; i < n; i++) {
        sred_otk += pow((mas[i] - sred), 2);
    }
    sred_otk = sqrt(sred_otk / n);
    return sred_otk;
}
int main()
{
    double mas[10] = {12,9,9,16,12,10,7,12,12,10};
    cout << sr_otk(mas, 10);
    system("pause");
    return 0;
}