PreTeXt Sample Book: Abstract Algebra (SAMPLE ONLY)

<program xml:id="python-hello-world" interactive="activecode" language="python" label="hello-world">
    <code>
    print("Hello, World!")
    </code>
</program>

<program xml:id="javascript-hello-world" interactive="activecode" language="javascript">
    <code>
    document.write('Hello, world!');
    </code>
</program>

<program interactive="activecode" label="hello-world-cpp" language="cpp" compiler-args="-std=c++17,-Wall,-g" linker-args="-g,-s">
    <code>
        #include &lt;iostream&gt;
        #include &lt;string&gt;
        using namespace std;
        int main() {
            string name;
            cin &gt;&gt; name;
            cout &lt;&lt; "Hello, " &lt;&lt; name &lt;&lt; endl;
            return 0;
        }
    </code>
    <stdin>Jane</stdin>
</program>

<program xml:id="java-hello-world-flags" interactive="activecode" language="java" interpreter-args="-Xrs,-Xss8m,-Xmx128m">
    <code>
    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
        }
    }
    </code>
</program>

<program xml:id="octave-simple" interactive="activecode" language="octave">
    <code>
    x = 2 + 2
    printf("%d\n", x)
    </code>
</program>

<program xml:id="pascal-mistake" interactive="activecode" language="pascal">
    <code>
    program HelloWorld;
    begin
      WriteLn('Hello, world!');
    end.
    </code>
</program>

<program interactive="activecode" language="python" label="program-activecode-python-ambles">
    <preamble>
    def add(a, b):
    </preamble>
    <code>
        # TODO - complete the add function

    </code>
    <postamble>
    # Use the function
    result = add(2, 3)
    if result == 5:
        print("Test passed")
    else:
        print("Test failed")
    </postamble>
</program>

<program interactive="activecode" language="python" label="program-activecode-python-ambles-invisible">
    <preamble visible="no">
    def add(a, b):
    </preamble>
    <code>
        # TODO - complete the add function
    </code>
    <postamble visible="no">

    # Use the function
    result = add(2, 3)
    if result == 5:
        print("Test passed")
    else:
        print("Test failed")
    </postamble>
</program>

<program xml:id="python-statistics" interactive="activecode" label="statistics">
    <code>
    loan_amount = [1250.0, 500.0, 1450.0, 200.0, 700.0, 100.0, 250.0, 225.0, 1200.0, 150.0, 600.0, 300.0, 700.0, 125.0, 650.0, 175.0, 1800.0, 1525.0, 575.0, 700.0, 1450.0, 400.0, 200.0, 1000.0, 350.0]

    country_name = ['Azerbaijan', 'El Salvador', 'Bolivia', 'Paraguay', 'El Salvador', 'Philippines', 'Philippines', 'Nicaragua', 'Guatemala', 'Philippines', 'Paraguay', 'Philippines', 'Bolivia', 'Philippines', 'Philippines', 'Madagascar', 'Georgia', 'Uganda', 'Kenya', 'Tajikistan', 'Jordan', 'Kenya', 'Philippines', 'Ecuador', 'Kenya']

    time_to_raise = [193075.0, 1157108.0, 1552939.0, 244945.0, 238797.0, 1248909.0, 773599.0, 116181.0, 2288095.0, 51668.0, 26717.0, 48030.0, 1839190.0, 71117.0, 580401.0, 800427.0, 1156218.0, 1166045.0, 2924705.0, 470622.0, 24078.0, 260044.0, 445938.0, 201408.0, 2370450.0]

    num_lenders_total = [38, 18, 51, 3, 21, 1, 10, 8, 42, 1, 18, 6, 28, 5, 16, 7, 54, 1, 18, 22, 36, 12, 8, 24, 8]
    </code>
</program>