// File iosflags.cpp

#include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;

void show_settings(int flags)
{
    cout << setw(4) << setfill('0') << hex <<  
            flags << endl;
}

int main()
{
    ofstream fout("c:\\test.txt");
    int old_values, new_values, orig_values;

    // Display default settings for ios flags.
    old_values = fout.flags();
    show_settings(old_values);

    // Set some flags.
    fout << boolalpha << hex << showbase;
    fout << noskipws;
    new_values = fout.flags();
    show_settings(new_values);
    
    // Restore flag values to original values.
    fout << noboolalpha << dec << noshowbase;
    orig_values = fout.flags();
    show_settings(orig_values);
    
    // Alternative way to set flags.
    old_values = fout.flags();
    fout.setf(old_values | ios::boolalpha | 
                ios::hex | ios::showbase);
    new_values = fout.flags();
    show_settings(new_values);

    return EXIT_SUCCESS;
}

// Output:
// 0201
// 4808
// 0200
// 4a08