/*/////////////////////////////////////////////////////////////////////////////
* Factorial using recurrsion
* Shubham Kumar
* sshubhamk1@hotmail.com
/////////////////////////////////////////////////////////////////////////////*/
#include <iostream>
using namespace std;
long fact(int num);
int main(void)
{
int num;
do
{
cout <<"Enter the number: ";
cin >> num;
if(num <0)
{
cout << "Number should be non-negative. Try agian..."<<endl;
}
}while(num <0);
cout << "The Factorial of "<< num << " is "<< fact(num) << endl;
return 0;
}
long fact(int num)
{
if(num <2)
return 1;
else
return num *fact(num - 1);}