Zip code prob1

//the code should add all 5 digits of the code together, and then figure out how much to add to it to round to the nearest multiple of 10
// the prof said you have done a brute force method of doing all 5 digits, but then wrapped it in a loop.  The preferred method is to have a loop that is done once for each digit.   Third, there is an error in your computation that can result in a check "digit" with the value 10 which of course requires 2 digits to express.   Fourth, this function should not produce external output.  The result is strictly the return value.
int makeCheckDigit (int value)
{
int one, two, three, four, five, total, checkDigit, zipcode, count = 0;

	do
	{
	five = zipcode % 10;
	four = (zipcode/10) % 10;
	three = (zipcode / 100) % 10;
	two = (zipcode / 1000) % 10;
	one = (zipcode / 10000) % 10;
	count += 1;
	}

	while (count <= 5);

	total = one + two + three + four + five;
	checkDigit = 10 - (total % 10);

	return checkDigit;
}