//using setf() with 2 arguments to control formatting
#include <iostream>
#include <cmath>

int main()
{
    using namespace std;
    cout.setf(ios_base::left, ios_base::adjustfield);
    cout.setf(ios_base::showpos);
    cout.setf(ios_base::showpoint);
    cout.precision(3);
    ios_base::fmtflags old = cout.setf(ios_base::scientific, ios_base::floatfield);
    cout << "Left Justfication:\n";
    long n;
    for(n = 1; n <= 41; n += 10)
    {
        cout.width(4);
        cout << n << "|";
        cout.width(12);
        cout << sqrt(double(n)) << "|\n";
    }
    //change to internal justification
    cout.setf(ios_base::internal, ios_base::adjustfield);
    cout.setf(old, ios_base::floatfield);
    cout << "Internal Justification:\n";
    for(n = 1; n <= 41; n += 10)
    {
        cout.width(4);
        cout << n << "|";
        cout.width(12);
        cout << sqrt(double(n)) << "|\n";
    }
    cout.setf(ios_base::right, ios_base::adjustfield);
    cout.setf(ios_base::fixed, ios_base::floatfield);
    cout << "Right Justification: \n";
    for(n = 1; n <= 41; n += 10)
    {
        cout.width(4);
        cout << n << "|";
        cout.width(12);
        cout << sqrt(double(n)) << "|\n";
    }
    return 0;
}