What formula shoul i use?

Question

In the task there is given number n, which is the number of roots and formula looks like sqrt(2+sqrt(2+...)).
And my code looks like:
#include <iostream>
#include <cmath>
using namespace std;
int main() {
int n, i;
float c;
cin>>n;
i=0;
while(i<n){
c=sqrt(2+sqrt(2));
i++;
}
cout<<c ;
return 0;
}

What should I do so the code was right?
https://code.sololearn.com/cTt8609x7Rwh/?ref=app

Answer 1

c=sqrt(2+c);

Answer 2

Error is there in 13th line
Write cout<<c; instead of "cout c ;"

Answer 3

I didn't get you Aruzhan , what did you mean? kindly elaborate

Answer 4

Thanks, but how to calculate this formula?
Like input:
1
Output:
1.4

Input:
2
Output:
1.8

Answer 5

It should calculate n roots, like if input is 1, then c=sqrt(2), so the output is 1.4
If input is 2, then c=sqrt(2+sqrt(2)), so the output is 1.8 and so on