Binomial Coefficient (Factorial) in Functions in C++

 

int factorial(int n) {

    int fact = 1;

    for(int i =1; i<=n; i++){

        fact *= i;

    }

    return fact;

}

int binCoeff(int n, int r) {

    int val1 = factorial(n);

    int val2 = factorial(r);

    int val3 = factorial(n-r);

    int result = val1/(val2*val3);

    return result;

}

int main(){

    cout << binCoeff(4, 2) << endl;

   

    return 0;

}