Thread: 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