wap c++ program to print factorial number using class and object

 wap  c++ program to print factorial number  using class and object 

#include<iostream>
using namespace std;
class rohit
{
    int n, n1,fact=1;
    public:
    void input();
    void calc();
    void  display();
};

void rohit::input()
{
    cout<<" enter the number of factoril "<<endl;
    cin>>n;
}
void rohit::calc()
{
    n1=n;
    if(n==0||n==1)
    {
        cout<<"fact is 1"<<endl;
    }
    else{

        while(n>0)
        {
            fact=fact*n;
            n--;
        }
    }
}
void rohit::display()
{
    cout<<"fact is ="<<fact<<endl;

}
int main()
{
    rohit s;
    s.input();
    s.calc();
    s.display();
    return 0;
}

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