I need some help w/a programming project...

[xsyntricity]

Okay...don't laugh...

I am a freshman C.S. major at my college and I am starting out learning c++ on a linux console machine. We are currently writing a program that reads in a list of numbers from a file and populates an array with those values. Then, it sorts the values and computes the mean, median, mode, and standard deviation. I am having one slight problem. The function I wrote for finding the mode only returns the highest value(ie, if there are two or three modes it only returns one of them - the highest value). I have included my humble little piece of code and if it isn't too much trouble with for you gurus I would greatly appreciate some assistance...here are the questions I need answered:

1. Is there a way to simply modify my existing code(i.e. changing the type to void and adding another loop over the top)

2. Do I need to use another array to determine the frequency of each value and if so, how do I implement it?

3. If I do need to use an array for frequency, how could I compare the two arrays to find all of the correct frequency indices?

If I am posting in the wrong forum, sorry...if you know where I could get help on this I would love to know...anyway...here is my function for the mode:

(I realize I will probably have to change its type to void since I need to find multiple modes...as it is, it returns the highest value mode regardless of how many there are)

int mode(int array[], int SIZE_OF_ARRAY)
{

	using namespace std;

	int counter = 0;
	int max = 0;
	int i;
	int mode_index = 0;

	for (int i = 0; i < SIZE_OF_ARRAY; i++)
	{
		if (array[i] == array[i + 1])
		{
			counter++;
		}

		else
		{
			if (counter > max)
			{
				max = counter;
			}

			counter = 0;
		}
	}	

	counter = 0;


	for (i = 0; i < SIZE_OF_ARRAY; i++)
	{
		if (array[i] == array[i + 1])
		{
			counter++;
		}

		else
		{
			if (counter == max)
			{
				mode_index = i;
			}

			counter = 0;
		}

	}

	return array[mode_index];

}