C++ Pi 4 Decimal
#include <iostream>
#include <iomanip>
#include <cmath>
int main() {
const double pi = M_PI;
std::cout << std::fixed << std::setprecision(4) << pi;
return 0;
}
#include <iostream>
#include <iomanip>
#include <cmath>
int main() {
const double pi = M_PI;
std::cout << std::fixed << std::setprecision(4) << pi;
return 0;
}