Pi in c++

#define _USE_MATH_DEFINES // must include this!
 
#include <cmath>
#include <iostream>
 
int main() { 
  // M_PI = 3.14159265358979323846;
  std::cout << M_PI << " " << M_E << " " << M_SQRT2 << endl;
  return 0;
}

Source: quantstart.com

C++ pi float

const float pi = 2 * acos(0.0f);

Long pi in c++

typedef long double ld;
const ld pi = 3.1415926535897932384626433832795;

Similar codes

0 vote325 views1 answer
How to read qlistwidget in c++
C++
0 vote304 views1 answer
C++ main function parameters
C++
0 vote342 views1 answer
Vector keyword in c++
C++
-1 vote293 views1 answer
Sinonimo de tratar
C++
0 vote295 views1 answer
Binary algebra cpp
C++
0 vote296 views1 answer
C++ pause linux
C++
3 votes353 views2 answers
C++ first letter of string
C++
0 vote300 views1 answer
C++ static array in Klasse
C++
17 votes304 views2 answers
Convert string to char c++
C++
6 votes310 views1 answer
C++ estimate deciimal to a point
C++