Array Funtions

Hi... I am trying to write a function that, in short, uses info from an ID array and info from a Balance array and computes the average balance for for the Balance array. That average will be returned back to the main program. I am kinda lost right now but I will post what I have so far. Please make any suggestions you may have because I need all the help I can get! :)
Thank you in advance for your time!

Code:

---


//function to determine average balance

double ave_bal(int ID [], int num_bal)
{       
              int subtotal = 0;
        int total;

        for (int j = 0; j< num_bal; j++0)
{
        subtotal += ID [j];
}
        total = subtotal / num_bal;

return total;

---

Okay... I know its bad... but I really need help! I cant get the average and I know its a problem with my function code.
Thanks for any help! :)

GrlNewB

Remove the "0" after the "j++" ,change the type of total to double, cast subtotal to double so the compiler will perform floating point division and not integer division.
Remember that in integer division, 5/3 is 1.

gg

ah, thank you! I am currently working on the rest of the program so I am not able to test it at this time... but I will ASAP and post back whether or not it fixed my problems(s).
Thanks again :)

Ok, this is my variable declaration at the very beginning of my program. When I try to compile it, it tells me:

: error C2440: 'initializing' : cannot convert from 'const int' to 'int [100]'

I havent declared them as a const, so why is it giving me this error? It shows this error all over the program each time I refer back to either of the two arrays. Any ideas as to why it is doing this?

Code:

---

int main ()
{
        int n, j;
        int ID [100] = 0;
        int bal [100] = 0;
        double ave;
        double sum_bal;

---

The program goes on... but this is where it keeps referring back to when I get the errors. Any help would be much appreciated :)

GrlNewB

Code:

---

int array[100] = {0}; //initialize array to all zero's

---

gg

amazing... so adding those little brackets around the "0" fixed all that... go figure!! Thanks again!

lol... you are going to get tired of me by the time I actually get this program to work :)

This error:

error C2040: '<' : 'int [100]' differs in levels of indirection from 'const int'


keeps pointing to this code:

Code:

---



if (ID < 1000 || ID > 9999)
        {       
                cout<<"Invalid ID, please reenter: "<<endl;
        }
       
        if (bal > 10000)
        {
                cout<<"Invalid Balance, please reenter: "<<endl;
        }

---

Could you point me to where my error is or what it is concerning?

ID is an array, so you have to say:

Code:

---

if (ID[<index value>] < 1000 || ID[<index value>] > 9999)

---

Same with bal.

gg

oh duh... I cant believe I left out that very VITAL piece of info... thanks again Codeplug :)