manipulator example

#include <iomanip>

#include <iostream>

int main (void) {

double x = 1.2345678;

streamsize prec = cout.precision();

cout << x << endl <<

setprecision(1) << x << endl <<

setprecision(2) << x << endl <<

set precision(3) << x << endl <<

setprecision(4) << x << endl <<

setprecision(2) << x << endl <<

setprecision(1) << x << endl <<

setprecision(prec) << x << endl; }