decimal, hexadecimal and octal output

Bjarne Stroustrup “Programming Principles and Practice Using C++”
Chapter 11 Try This page 382
Using std_lib_facilities.h by Bjarne Stroustrup.

[code language=”cpp”]
// Philipp Siedler
// Bjarne Stroustrup’s PPP
// Chapter 11 Try This page 382

#include "std_lib_facilities.h"

int main()
try
{
int my_birth_year = 1988;
int my_age = 28;

cout << "My birth year:" << endl;
cout << my_birth_year << "\t(decimal)\n"
<< hex << my_birth_year << "\t(hexadecimal)\n"
<< oct << my_birth_year << "\t(octal)\n";

cout << "My age:" << endl;
cout << dec << my_age << "\t(decimal)\n"
<< hex << my_age << "\t(hexadecimal)\n"
<< oct << my_age << "\t(octal)\n";

keep_window_open();
}
catch (runtime_error e) {
cout << e.what() << endl;
keep_window_open();
}
catch (…) {
cout << "Exiting" << endl;
keep_window_open();
}
[/code]

Output:
My birth year:
1988    (decimal)
7c4     (hexadecimal)
3704    (octal)
My age:
28      (decimal)
1c      (hexadecimal)
34      (octal)
Please enter a character to exit