Please help C or C#

Question

Input : n value
And the program should calculate :
S=(2^2)/(4!) + (2^4)/(5!) - (2^6)/(6!) ... +/- (2^k)/(n!)

Answer 1

Kodka
Can you share your code in question Description?
You need to share it before Ace can see it and suggest you something. Without a code it's all imaginary.

Answer 2

Ipang thank you for the suggestion
Ace thank you so much again , the ((-1)^k+1) was what I couldn’t figure out !
Thank you guys ❤️

Answer 3

Ace would you please help me sir to solve this sequance ? I am beginner and I tried to solve it but I can’t make it ... I would appreciate your help and I will learn from the solution

Answer 4

Thank you ❤️ I will try it

Answer 5

Ace I kept trying and by now I feel useless 😂