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;
}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;
}long pi in c++
typedef long double ld;
const ld pi = 3.1415926535897932384626433832795;Copyright © 2021 Codeinu
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