Program to find SUM OF FACTORIAL upto n.

source code:

 

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

using namespace std;

int main()
{
    int number,i=1,sum=0;
    long int fact=1;
    cout<<"Enter a positive integer to find its factorial :  ";
    cin>>number;
    for(i=1;i<=number;i++)
        {
            fact=fact*i;
            sum=sum+fact;
        }

    cout<<number<<"! = "<<sum;
    getch();
}

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