How do i add the result of the factorial values..

Question

I'm having a logic problem here.. i want to add the result of the factorial values.. how do i add them.. here's my code..

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Task_8_Set_III
{
    class Program                       
     {
        static void Main(string[] args)
        {
            for (int i = 1; i <= 7; i++)
            {
                double c = i / fact(i);

                Console.WriteLine("Factorial is : " + c);
                Console.ReadLine();
                Console.WriteLine("By Adding.. will give " +);

            }
        }
        static double fact(double value)
        {
            if (value ==1)
            {
                return 1;
            }
            else
            {
                return (value * (fact(value - 1)));
            }
        }
    }
}

Answer 1

You need to add a total variable to keep track of the sum.

double total = 0; //the total

for (int i = 1; i <= 7; i++)
{
    double c = i / fact(i);
    total += c; // build up the value each time
    Console.WriteLine("Factorial is : " + c);
    Console.ReadLine();
    Console.WriteLine("By Adding.. will give " + total);

}

Answer 2

Not sure if this is what you meant but if for factorial of N you want to have the sum of all factorials up to that value this is how you do it.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Task_8_Set_III
{
    class Program                       
     {
        static void Main(string[] args)
        {
            double sum = 0;
            for (int i = 1; i <= 7; i++)
            {
                double c = i / fact(i);
                sum += c;
                Console.WriteLine("Factorial is : " + c);
                Console.ReadLine();
                Console.WriteLine("By Adding.. will give " + sum);

            }
        }
        static double fact(double value)
        {
            if (value ==1)
            {
                return 1;
            }
            else
            {
                return (value * (fact(value - 1)));
            }
        }
    }
}

Answer 3

short of totally understanding what you want to do exactly, here's two things...

• in programming, the following expression is perfectly valid: i = i + 1 Saying "the new value of i is the old value of i plus one"
• variables live within scopes, their boundaries usually being braces { }, that is you will need a variable that is outside the braces of the foreach in order to "remember" stuff of the previous iteration.

Answer 4

   static void Main(string[] args)
            {
                int sum = 0;
                for (int i = 1; i <= 7; i++)
                {
                    int c = fact(i);
                    sum += c;
                    Console.WriteLine("Factorial is : " + c);
                    Console.ReadLine();
                    Console.WriteLine("By Adding.. will give " + sum);

                }
            }
            static int fact(int value)
            {
                if (value ==1)
                {
                    return 1;
                }
                else
                {
                    return (value * (fact(value - 1)));
                }
            }