Program to print sum of factorial of Odd series in C

C# Program to print sum of factorial of Odd series

Program Statement:

Write a program to display the sum of the following series i.e. sum of the factorial of odd series

1! + 3! + 5! + 7! + 9! + . . . + n!

Solution:

 static void Main(string[] args)
 {
 int i, j, f,last, sum = 0;
 Console.WriteLine("Enter Last value:");
 last = Convert.ToInt32(Console.ReadLine());
 i = 1;
 while (i <= last)
 {
 f = 1;
 j = i;
 while (j >= 1)
 {
 f = f * j;
 j--;
 }
 sum = sum + f;
 Console.WriteLine("factorial of " +i+"="+f);
 i = i + 2;
 }
 Console.WriteLine("sum of all factorial = " + sum);
 Console.ReadLine();
 }