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Triangle Angle Project

vwynn (6)
Hey everyone,

I'm pretty much finished this project except I keep running into one issue. The bool function seems to only work once. For example, if I input 3, 4, and 9 it will tell me 3, 4, and 9 does not form a triangle which is true. However if I try to enter 3, 4, and 9 after that first time, it will compute it anyway though it does not form a triangle. I'm not sure what I'm doing wrong.

Thanks!

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#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

const int sides = 3;
double side[sides];
string r1, r2;

void getSides()
{
	cout << "Entering 0 for all 3 sides will end the program." << endl;
	cout << "Enter side A: ";
	cin >> side[0];
	cout << "Enter side B: ";
	cin >> side[1];
	cout << "Enter side C: ";
	cin >> side[2];
}

void sortSides()
{
	if (side[1] < side[0])
	{
		swap(side[1], side[0]);
	}
	if (side[2] < side[0])
	{
		swap(side[2], side[0]);
	}
	if (side[2] < side[1])
	{
		swap(side[2], side[1]);
	}

}

void display1()
{
	if (side[0] == side[1] && side[0] == side[2])
	{
		cout << "equilateral ";
	}
	else if (side[0] == side[1] || side[0] == side[2] || side[1] == side[2])
	{
		cout << "isosceles ";
	}
	else
	{
		cout << "scalene ";
	}
}

void display2()
{
	double c1 = (side[2] * side[2]), a1 = (side[0] * side[0]), b1 = (side[1] * side[1]);
	if (c1 == a1 + b1)
	{
		cout << "right ";
	}
	if (c1 > a1 + b1)
	{
		cout << "obtuse ";
	}
	if (c1 < a1 + b1)
	{
		cout << "acute ";
	}
}

bool formTriangle()
{
	if (side[0] < side[1] + side[2])
		return true;
	else
		return false;
}

int main()
{

	do
	{
		if (formTriangle() == 1)
		{
			getSides();
			sortSides();
			cout << "The sides " << side[0] << ", " << side[1] << ", and " << side[2] << " form a ";
			display1();
			display2();
			cout << "triangle." << endl;
		}
		if (formTriangle() == 0)
		{
			getSides();
			sortSides();
			cout << "The sides " << side[0] << ", " << side[1] << ", and " << side[2] << " does not form a triangle." << endl;
		}
	} while (side[0] != 0 && side[1] != 0 && side[2] != 0);

	system("PAUSE");
	return 0;
}
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