Help in c++

Question

https://code.sololearn.com/cwJ6PgEfIXtw/?ref=app

Answer 1

pow((-1), n) // not -1**n

edit:

#include <math.h>
#include <iostream>
using namespace std;

int main() {

double n;
double result = 0;
double rhs = M_PI / 4;

for(n=0; n < 10000000; n++){
result += pow((-1), n)/ (2 * n + 1);
if(result >= rhs || result<= 0)
break;
}

cout<<"Lhs = "<<result<<endl;
cout<<"Rhs = "<<rhs;

return 0;
}

Answer 2

Thx bro