program to Print Sum of factorial Series in C

C# program to Print Sum of factorial Series

Program Statement:

Write a program to display the sum of the following series.

2/1! + 4/3! + 6/5! + 8/7! + 10/9! + . . . + n/(n-1)!

Solution:

 public class factorial
 {
 int n;
 public void ser()
 {
 double f, sum = 2, res = 1, up = 2;

 Console.WriteLine(" Series = 2/1! + 4/3! + 6/5! + 8/7! + 10/9! + . . . + n/(n-1)!");
 Console.WriteLine();
 Console.Write(" Enter ending point : ");
 n = Convert.ToInt16(Console.ReadLine());

 for (int i = 2; i <= n; i++)
 {
 if (i % 2 == 1)
 {
 f = 1;
 for (int x = i; x > 0; x--)
 { f = f * x; }
 up = up + 2;
 res = up / f;
 sum = sum + res;
 }
 }
 Console.WriteLine(" Sum : {0} ", sum);
 Console.WriteLine();
 }
 } 

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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();
 }

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C Program to print sum of the factorial of odd series multiply with x where power of x is square of corresponding number

C# Program to print sum of the factorial of odd series multiply with x where power of x is square of corresponding number

Program Statement:

Write a program to display the sum of the following series i.e. sum of the factorial of odd series multiply with x where power of x is square of corresponding number.

X1*1! + X9*3! + X25*5! + X49*7! + X81*9! + . . . + Xn2*n!

Solution:

 class _power
 {
 long n, f, x, sum = 0;
 public long power(long a, long b)
 {
 long res = 1;
 for (int i = 1; i <= b; i++)
 res = res * a;
 return res;
 }
 public void cal()
 {
 Console.WriteLine(" Series X^1*1! + X^9*3 +...+X^n2*n! ");
 Console.Write(" Enter value of x : ");
 x = Convert.ToInt32(Console.ReadLine());
 Console.Write(" Enter ending point : ");
 n = Convert.ToInt32(Console.ReadLine());
 for (int i = 1; i <= n; i++)
 {
 if (i % 2 != 0)
 {
 f = 1;
 for (int j = i; j >= 1; j--)
 f = f * j;
 sum = sum + ((power(x, i * i)) * f);
 }
 }
 Console.WriteLine(" Result = {0} ", sum);
 }
 } 

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program to print sum of series in C using loops

C# program to print sum of series

Program Statement:

Write a program to display the sum of the following series using loop.

1*x + 2*x2 + 3*x3 + 4*x4 + 5*x5 + … + n*xn

Solution:

 static void Main(string[] args)
 {
 int j, n = 1, x, lastn, sum = 0, prod = 1;
 Console.WriteLine("Enter last digit:");
 lastn=Convert.ToInt32(Console.ReadLine());
 Console.WriteLine("Enter value of x:");
 x = Convert.ToInt32(Console.ReadLine());
 for (j = 1; j <= lastn; j++)
 {
 n = n * x;
 prod = n * j;
 sum = sum + prod;
 }
 Console.WriteLine("Sum of Series 1*x + 2*x2 + 3*x3 + 4*x4 + 5*x5 + … + n*xn when n=: " + n +" and x= "+ x+ "sum= "+ sum);
 Console.ReadLine();
 }
 

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