#include <stdio.h>
#include <math.h>


double arithMean(double values[], int length)
{
    double sum=0;
    for (int i = 0; i<length; i++)
        sum+=values[i];

    return sum/length;
}

double geomMean(double values[], int length)
{
    double product=1;;
    for (int i = 0; i<length; i++)
        product*=values[i];

    product = pow(product, 1.0/length);
    return product;
}

double harmMean(double values[], int length)
{
    double sum=0;
    for (int i = 0; i<length; i++)
        sum+=1.0/values[i];

    return length/sum;
}

int main()
{
    double data[]= {23,37,14,8,64,52,32,18};
    int size=8;
    printf("Arithmetic mean = %f\n", arithMean(data, size));
    printf("Geometric mean = %f\n", geomMean(data, size));
    printf("Harmonic mean = %f\n", harmMean(data, size));
    return 0;
}