newbie question

[AA225]

im just practicing some basic programming and have a question..

My program calculates a students average based on the a user-assigned number of assignments. my question is how do i make the program get the sum all the values that are put in during each repetition of the 'while' loop?

[Modeller]

It might be difficult to provide an exact answer to your question since how the student's values are given is unclear. However, I might suggest the following:


double sum = 0.0;
int numberOfItems = 0;

while (more to go) // Here specify how the loop will stop
{
// Read the studen's value
float value = student's value; // Here place your input-reading
sum += value;
numberOfItems++;
}

float average = sum / (numberOfItems + 1);

// if your data requires storage then use an array
// float value __gc[] = new float __gc [numberOfValues]

I hope this will help!

[cilu]

Why

float average = sum / (numberOfItems + 1);

and not

float average = sum / numberOfItems;

If you enter the while loop then the first one is wrong. If you did it to avoid division by 0, then you should have done something like:

float average = 0;
if(numberOfItems>0) average = sum / numberOfItems;

or

float average = sum;
if(numberOfItems>0) average /= numberOfItems;

[AA225]

got it working....thanks for your help everyone :)