factorial.cxx

#include <iostream>
#include <conio.h>

using namespace std;

int fact(int x)
{
    if (x <= 0)
    return 1;
    else return x * fact(x -1);
}

int main()
{
    int n;
    cout <<"enter value = ";
    cin>>n;
    cout << "factorial = ";
    cout << fact(n);
}