I am trying to write a program that repeatedly asks you to enter pairs of numbers until at least one of the pair is zero. For each pair, the program should use a function to calculate the harmonic mean of the numbers the function should report the result. This is the code I have done but I am not sure I am on the right track. I just can't seem to get the right things together.

#include <iostream.h>

const int ArSize = 2;

int fill_array(int ar[], int n);

double hmean(double x, double y);

int main(void)

{

int numbers[ArSize];

cout << "Please enter a pair of numbers\n";

cout << "\t(q to quit)\n\n";

int total = fill_array(int ar[], int n);

hmean(total, numbers);

cin.get();

return 0;

}

int fill_array(int ar[], int n)

{

int numbers;

for (int i = 0; i < n; i++)

{

cout << "Enter pairs #" << (i + 1) << ": ";

while (!(cin >> numbers))

{

if (i==0)

break;

return 0;

}

ar[i] = numbers;

}

return i;

}

double hmean(int ar[], int n)

{ int x,y = 0;

for (int i = 0; i < n; i++)

{

return ar[i] = 2*x*y/(x+y);

}

}