Create a class with a method which can calculate the sum of first n natural

[annieshvijay]

say me answer

[mvmalderen]

Read the rules and make sure you understand them. After that if you're still interested you could come back, reformulate your question and post your own attempt and point out which difficulties you are facing.

[stultuske]

giving an answer implies that a question was asked ....
next to what tux said, this seems like a bit of a school assignment. so far, you haven't even shown that you know how to create a class or write a method. that is the very (very) least you should 've shown here.

[G_S]

I'm pretty sure it's a school assignment. I got the same assignment a while ago. It looks daunting at first for newcomers, but it is quite easy. Try to solve the problem in your head or using a piece of paper without actually coding, just think about a solution and ask questions if you encounter some problems.