[šẀέέţ Ļίfέツ]

#include <iostream.h>
void main ()
{
    
    int x=0;
    int c=1;
    
    do

    {
        cout<<"This program calculates the factorial of a number.\n";
        cout <<endl<< "please Enter Number:";
        cin>>x;
    }while (x<=0);
        
        for (int i=x; i>0;i--)
        {
            c=c*i;
        }
        cout<<endl<<"The Factorial of "<<x<<" is:"<<c<<endl;

}

هذي محآولتي للسؤآل آلثآني .!