#include <iostream>
#include <iomanip>

using namespace std;

int main() {
	
	double p = 3.14157;
	double p2 = p;
	cout << "p  = " << p << endl;
	cout << setw(20) << setprecision(3) << fixed << "p = " << p << ", p2 = " << p2 << endl;
	cout << "p2 = " << p2 << endl;
	cout << setprecision(4) << fixed << "p  = " << p << endl;
	cout << "p2 = " << p2 << endl;
	
}