How to write this in c++?

Answer 1

Why you are taking from 1 to 0.010 reverse ? I don't understand it..

But may you trying this..
hope it helps to get that..

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

int main() {

double n;
double result = 0;
double rhs = 0.5 - M_PI / 8;

for( n=1; n < 10000000; n++){
result += 1.0 / ((4 * n - 1) * (4 * n + 1));
if(result >= rhs || result<= 0)
break;
}

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

return 0;
}

edit: Noël Julmiste Fils
// there it have difference in a fraction point.
//after reaching almost to (1/2 - PI/8) , it going to negetive values so it not equaling exactly but reaching to very very close to rhs.

Answer 2

Jayakrishna🇮🇳 thanks!

Answer 3

https://www.sololearn.com/post/1585056/?ref=app