math is breaking i think...

[kyle11778]

i am in a discrete struct class and a program i had to make works but also seem to get negative numbers and dont know why. i think the fractorial function is breaking. here is the code and any help would be great thanks....

#include <iostream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	int m,n,answer;
	int factorial(int);

	cout << "Enter number of Martians: ";
	cin >> m;
	cout << "Enter number of Jovians: ";
	cin >> n;

	if(n<(m+2))     // easily checks for doubleing issues--m=2 and n=4 eg. _m_m_ 3 spots but 4 n's
	{				// will cause doubleing events in every case!
					// answer= m!*((m+1)!/(m-n+1)!)
		answer = ((factorial(m))*((factorial(m+1))/(factorial(m-n+1)))); 
		cout << answer << endl;
	}else{
		cout << "No combinations possible."<<endl;
	}
	system("pause");
	return 0;
}

int factorial(int i)
{
	for(int j=(i-1);j!=0;j--)
		i = i*j;
	return i;
}

PS-- i am using Visual C++

[hamsterman]

works fine for me..

[kyle11778]

i closed and reopened it and now i am getting right answers... stupid programming :)