compiles, but doesn't run correctly, problem w/ for loop or if condition

[struntz]

Hello everyone!

i've been trying to figure this code otu for awhile and i don't know why this isnt' working maybe the problem isn't even with the if condition, but here is the code:

#include <iostream>
#include <iomanip>
using namespace std;


int main()
{
	const int NUM = 3;						//for debugging, should be larger #
	double amount, total = 0, *data;
	int count = 0, size = NUM;
	data = new double[size];				//initial array on the heap

	do
	{
		cout <<" Enter amount (or 0 to finish): ";
		cin >> amount;
		if(amount == 0) break;
		
		if(count == size)
		{
			double *q = new double[2*size];
			cout <<"More memory alocated: size = " << size << endl;
			for(int i = 0; i < size; i++)
			{
				q[i] = data[i];
				size *= 2;
				delete [] data;
				data = q;
			}
			total += amount;
			data[count++] = amount;
		}

	}while(true);
													//get next inputed value
		if(amount != 0)
		{
			cout <<"Out of memory: input was terminated\n";
			cout <<"The value " << amount << " is not saved" << endl;
		}
		cout <<"\n Total of" << count << "values is" 
			<< total << endl;
		if(count == 0) return 0;
		cout << "\n Tran no. Amount\n\n";
		cout.setf(ios::fixed);
		cout.precision(2);
		for(int i =0; i < count; i++)
		{
			cout << setw(4); cout << i+1;
			cout << setw(11); cout << data[i] << endl;
		}
return 0;
}

when i compile this, it compiles fine, but when i run this, after i enter more than 3 values, it should break off into this condition

if(count == size)
		{
			double *q = new double[2*size];
			cout <<"More memory alocated:  size = " << size << endl;
			for(int i = 0; i < size; i++)
			{
				q[i] = data[i];
				size *= 2;
				delete [] data;
				data = q;
			}

but it will let me enter mutliply numbers, i can add as much as i want and when i type in 0, it breaks and prints out
total number of 0 values is 0

the problem maybe in the for loop.....

thanksf or listening