Could someone help me with pi approximation, Please?

Question

Write a program to get an approximation of π with a precision of 10^(-5) using the following formula:
π=4.0×(1-1/3+1/5-1/7+⋯+〖(-1)〗^(n-1) ×1/(2n-1))
hints:
initialize pi =0 and i=1
the absolute value of the adding item determines the precision you can get when putting more items to pi, thus
adding item: 〖(-1)〗^(i-1) 1/(2i-1), then
when abs(adding item) >precision,
update pi with pi += adding item

#include<iostream>
using namespace std;
int main()
{
Double pi=0;
Int n; abs; i=1;

pi=4.0*(1-1/3+1/5-1/7+⋯+〖(-1)〗^(n-1)*1/(2n-1))
What should I do next?

Answer 1

Следуя вашей формуле, невозможно рассчитать, даже приблизительно, значение π, код-тому подтверждение
https://code.sololearn.com/crM8C1jUhLSv/?ref=app