/*
Q.    Write a C++ program to find out the factorial of a number using while loop
*/

#include<iostream>
using namespace std;

main()
{
    int n,i=1,f=1;
    cout<<"\nEnter a number=";
    cin>>n;
    while(i<=n)
    {
        f=f*i;
        i++;
    }
    cout<<"\nfactorial ="<<f;  
}