C++ program help

I'm trying to make a bowling program in C++. I have the basics down except for the math. If I bowl a spare or strike then 0's for the next few frames, the score keeps going up.

Here is the code

Code:

/*
 * This program was made to calculate the score in a bowling game.
 * 
*/

#include <iostream>
#include <cmath>

using namespace std;
int main()
{
	int throw_1, throw_2, throw_3, sum, count;
	bool strike, spare;
	count = 1;
	sum = 0;
    throw_1 = 0;
    throw_2 = 0;  
	do
	{
	cout << "Enter throw 1 of frame " << count << ": ";
	cin >> throw_1;
	if (throw_1 == 10)
		{
		cout << "Nice strike!" << endl;
	    strike = true;
		sum = sum + 10;
		
		}
	else if (throw_1 <=10)
		{
		cout << "Enter throw 2 of frame " << count << ": ";
		cin >> throw_2;
			if (throw_1 + throw_2 == 10)
			{
			cout << "Nice spare!" << endl;
			spare = true;
			sum = sum + throw_1 + throw_2;
			}     
			else if (throw_1 + throw_2 > 10)
			{
				do
				{
				cout << "Enter throw 2 of frame " << count << ": ";
				cin >> throw_2;
				}
				while (throw_1 + throw_2 > 10);
			}
			else
			{
			sum = sum + throw_1 + throw_2;
			}
		}
	 else
		{
		cout << "Enter throw 2 of frame " << count << ": ";
		cin >> throw_2;
		if (throw_1 + throw_2 == 10)
			{
			cout << "Nice spare!" << endl;
			}
		sum = sum + throw_1 + throw_2;
		}
    
    if(strike == true)
    {
     cout << sum << endl;
      sum = sum + 10 + throw_1;
    }
    
    else if(spare == true)
    {
    	cout << sum << endl;
      sum = sum + throw_1; //+ throw_2;
    }
                       
    
    if(sum == 300)
    {
      cout << "You bowled a perfect game!" << endl;
    } 
	
    if (count >= 10)
	{
	cout << sum << endl;
	}
		++count;
	}
	while (count <= 10);
	
	
system("PAUSE");
}

Here is a picture to illustrate what I am talking about.
http://i27.tinypic.com/20kc9ya.jpg

 

try adding this to the beginning of the do, looks to me like once its set to true it never gets set back to false.

strike = false;
spare = false;

 

I finished the program. Can a mod please delete this thread.