#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

int main( ) {

   ios_base::fmtflags flags = cout.flags( );

   double pi = 3.14285714;

   cout << "pi = " << fixed            
        << showpos                     
        << setprecision(3)
        << pi << '\n';    

   cout.flags(flags);
}
