Abstract Algebra: PRETEXT XML SAMPLE ONLY

Section 3.1 ActiveCode

Python programs are made interactive in HTML, on request.

A C program will only be interactive if hosted on a Runestone server.

#include <stdio.h>
int main(void)
{
puts("Hello, world!");
}

A Java program will only be interactive if hosted on a Runestone server.

import javax.swing.JFrame;  //Importing class JFrame
import javax.swing.JLabel;  //Importing class JLabel
public class HelloWorld {
public static void main(String[] args) {
JFrame frame = new JFrame();           //Creating frame
frame.setTitle("Hi!");                 //Setting title frame
frame.add(new JLabel("Hello, world!"));//Adding text to frame
frame.pack();                          //Setting size to smallest
frame.setLocationRelativeTo(null);     //Centering frame
frame.setVisible(true);                //Showing frame
}
}

Javascript programs are made interactive in HTML, on request.

A <program> is not interactive, by default, no matter where it is hosted.

import javax.swing.JFrame;  //Importing class JFrame
import javax.swing.JLabel;  //Importing class JLabel
public class HelloWorld {
public static void main(String[] args) {
JFrame frame = new JFrame();           //Creating frame
frame.setTitle("Hi!");                 //Setting title frame
frame.add(new JLabel("Hello, world!"));//Adding text to frame
frame.pack();                          //Setting size to smallest
frame.setLocationRelativeTo(null);     //Centering frame
frame.setVisible(true);                //Showing frame
}
}

An Octave program will only be interactive if hosted on a Runestone server. Octave is meant to be a drop-in replacement for Matlab.

x = 2 + 2
printf("%d\n", x)

A language not supported by Runestone Services will be rendered static.

program HelloWorld;
begin
WriteLn('Hello, world!');
end.

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