Answer 1

From this html page you could scrape 1 million digits of pi and look up the nth digit by string index.

https://www.piday.org/million/

How many digits do you need? NASA uses only 15 decimal places.

https://www.jpl.nasa.gov/edu/news/2016/3/16/how-many-decimals-of-pi-do-we-really-need/

Answer 2

For now... I've used a string for all pi digits

Answer 3

Gorom_Pani 🙄
That's not a spam
Google about m_pi

Answer 4

M_PI

Answer 5

Ref.Machin's formula.
But Max 15digits.
Ref.my original code
(Source list)

//Machin's formula
#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

int main() {
long double pi ;
pi = 4.0 * (4.0 * atan(1.0 / 5.0) - atan(1.0 / 239.0));
cout << setprecision(15) << pi << endl;
return 0;
}

Answer 6

Gorom pani sir.
Sorry.
I not understand solution.
Machin's formula for Wiki.
I studing.Pi analysis.

Answer 7

Try using std::numbers::pi_v<long double> defined in <numbers>
I think its somewhat more accurate than M_PI.
But I'm not very sure.

Answer 8

using namespace std;
void printValueOfPi()
{
double pi = 2 * asin(1.0);

printf("%f\n", pi);
}
int main()

{
printValueOfPi();

    return 0;

}

Output: 3.141593

Answer 9

use M_PI or acos(-1)

Answer 10

the result is wrong -32 digit 5288 ... ---> 50288......

Answer 11

you can measure the circumference of a circle using a string and a ruler then measure its diameter
then divide the circumference by its diameter!

Answer 12

Include math.h and use ROUND function upto the 15th digit 🤔

❤️ From memory 3.1415926 school 🚸

Answer 13

Alguien que me enseñe a programar en visual studio c#

Answer 14

P= 3.14