fork download
copy 
  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. int main() 
  5. {
  6.    long double pi = std::acos(static_cast<long double>(-1.0));
  7.    std::cout << pi << "\n";
  8.    return 0;
  9. }
  10.  
Success #stdin #stdout 0s 3296KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
3.14159
https://ideone.com/UKbUm8
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!