Binomial Coefficient Formula-2

#include<bits/stdc++.h>
using namespace std;

int binomial(int n, int k)
{
    int r = 1, i;
    for(i=n-k+1;i<=n;i++)
        r = r * i;
    for(i=2;i<=k;i++)
        r = r / i;

    return r;
}

int main()
{
    int n, k;

    cout << "Enter Two Number :: ";
    cin >> n >> k;

    cout << "Binomial Coefficient Is :: ";
    cout << binomial(n, k) << endl;

    return 0;
}