Can anyone explain this code

Question

https://www.sololearn.com/post/169776/?ref=app

Answer 1

It's recursive function

Answer 2

Your Function give me answer 72 when i am passing value 5 to the function

Answer 3

~ swim ~ Mohammed Qadir khan thanks you both I traced it on paper it's clear now thanks for the help

Answer 4

Ok

Answer 5

I think they
Add and Multiply with previous to give you total value

Answer 6

72

Answer 7

Mohammed Qadir khan yeah
~ swim ~ Can you help me to explain this code
int fun(int n){
int x = 1,k;
if(n==1){
return x;
}
for(k = 1;k<n;k++){
x = x + fun(k)*fun(n-k);

}
return x;
}

Answer 8

~ swim ~ what will be the output if we take 5 as input