interactive while loops

[marisa m]

Hi, I am new to this forum and I am having trouble with my interactive while loop. I can't get my program to loop three times, it will only loop once and it won't register my formula and just keeps my inventory balance the same- when it's supposed to change. Any help would be most appreciated.


#include <cstdlib>
#include <iostream>
#include <cmath>
#include <algorithm>
#include <iomanip>
#include <stdio.h>

using namespace std;


int main()
{
const int MAXNUMS = 3;
int count;
double balance, received, sold, idNum;

cout << "\nThis program will ask you to enter "
<< MAXNUMS << " numbers.\n";
count = 3;
balance = 0;

cout <<setiosflags(ios::fixed) <<setprecision(3);

while (balance <= count){
cout << "Enter a book identification number\n";
cin >> idNum;
cout << "What is the inventory balance at the beginning of the month?\n";
cin >> balance;
cout << "What many copies were received this month?\n";
cin >> received;
cout << "How many copies were sold this month?\n";
cin >> sold;
balance = balance + received - sold;
cout << "The balance is now " << balance;
++count;
}
cout << "\n\nThe final balance is " << balance << endl;

cout<<"\n\n\nThank You.\n\n\n";
system("PAUSE");
return EXIT_SUCCESS;
}

[kyiro37]

Because as soon as your loop runs, balance is no longer less than or equal to count.

while (balance<=count){
...
}

Guessing you meant to put

while (count<=MAXNUMS){
...
}

edit:
Er, that doesn't seem to have fixed the problem. Sorry.

[marisa m]

Okay thanks I'll try changing that. Any other helpful pointers?

[kyiro37]

I see what it is now. Change "count = 3" to "count = 0" and the while loop in my previous post.

Helpful pointers? No, sorry. I'm still fairly new and I have asked for help a few times on here. But reading through some of the posts on this forum has helped me.

[ENIGMAx]

You could also use a for-loop.

If you want to do the while-loop:

// like kyiro37 said, change count to 0, because you want to count UP to a certain value

while (count < MAXNUMS)
{
	// Your code here
	count++;
}

If you want to do a for-loop:

for (int i = 0; i < MAXNUMS; i++)
{
	// Your code here
}

[marisa m]

Hey, one more question. So, my program is going through three loops like it should and the formula is working too, but it is not giving me the correct final balance-- it's just giving me the results of the third loop. Any suggestions?

[kyiro37]

That's because your code tells it to do that!

I'm confused.

Can you please tell me what "balance" is the balance of?

Is it cash?