C+ For Engineers, function help

[Ejjman]

(20 pts) Define the function sumOdd(int inArrayPR[], int arraySizePR)that returns the sum of the values in odd indexes inArrayPR[] or -999999 if there are no odd indexes. It is guaranteed that arraySizePR is positive and at least 1.

I don't get what an index is I guess. bubbles[0] = 1, bubbles[1] = 2, where the 0,1 is the index, isn't that correct? So the only way the -999999 is going to show up is if the array size is 1? Or do I misunderstand what an index is.

ALL help is needed as the next 5 questions deal with indexes...

[HyperSecret]

Yes, you have the correct concept of an index, it is the number you have "indexed" into the array/how far you are "into" the array. If the only element in the array is element at index 0, then it should return -999999, otherwise you need to add together the odd indexed elements.

[1] + [3] + [5] +....etc

Also is this for C or C++? I assume C++

[Ejjman]

Ah ok that is what I thought. Thanks man!

It is for C#, unfortunately. But its a required for EE at my school so I can't really avoid it :\

[n3ss3s]

Assuming I'm late,

int sumOdd(int[] arr, int l) {
            int sum = 0;
            if (l < 2)
                return -999999;
            for (int i = 0; i < arr.Length; i++) { // do we count 0? If not, i = 1.
                if (i % 2 != 0)
                    sum += arr[i];
            }
            return sum;
        }