odd_array.cpp

#include <iostream>
using namespace std;

double average(int a[], int size);

int main( )
{
    int i, size, sum = 0;
    double ave;

    cout << "Enter the size:\t";
    cin >> size;

    cout << endl;

    int odd[size];

    for (i = 0; i < size; i++)
        odd[i] = 2*i + 1;

   ave = average(odd, size);

   for (i = 0; i < size; i++)
        sum = sum + odd[i];

   for (i = 0; i < size; i++)
        cout << "Index " << i << " odd value " << odd[i] << endl;
        cout << "The sum is: " << sum << endl;
        cout << "The average is: " << ave << endl;

    return 0;
}

double average(int a[], int size)
{
        int sum = 0;

        for (int i = 0; i < size; i++)
                sum = sum + a[i];

        return(static_cast<double>(sum/size));

}