To print and sum of following series 1! + 2! + 3!...........upper limit

#include <iostream>

using namespace std;

void main ()

{

       cout<<"Please enter the upper limit here:";

       int upperlimit;

       cin>>upperlimit;

       int i=1;// initialization for outer loop

       int fact=1; //initialization for factorial variable

       int sum=0; // 'O' is the identity of addition

       while (i<=upperlimit)

       {

             cout<<i<<"! ";

                         ///////////////////

                         // for remove last '!' sign

                                 if (i!=upperlimit)

                                        cout<<"+";

                                 else

                                        ; // ; means a blank statement

                         //////////////////

            

                    for (int j=i;j>=1;j--)

                    {

                           fact=fact*j;

                          

                    }

             sum=sum+fact; // for sum the following series

             fact=1; // for remove old / garbage value of variable

            

             i++; // increamnet of the outer loop

      

       }

       cout<<"\n\nThe sum of the following series: "<<sum<<endl;

}