Functions

import java.util.Scanner;

public class PictureMenu
{
    public static void main( String[] args )
    {
        Scanner kb = new Scanner(System.in);
        int choice;

        System.out.println( "1. Butterfly " );
        System.out.println( "2. Elephant  " );
        System.out.println( "3. Teddy Bear" );
        System.out.println( "4. Snake     " );

        System.out.print( "\nWhich animal to draw? " );
        choice = kb.nextInt();
        System.out.println();

        if ( choice == 1 )
        {
            butterfly();
        }
        else if ( choice == 2 )
        {
            elephant();
        }
        else if ( choice == 3 )
        {
            // * write code here to call the function named 'teddybear'
        }
        else if ( choice == 4 )
        {
            // * write code here to call the function named 'snake'
        }
        else
        {
            System.out.println( "Sorry, that wasn't one of the choices." );
        }

        System.out.println( "\nGoodbye!" );
    }

    public static void butterfly()
    {
        System.out.println("  .==-.                   .-==.     ");
        System.out.println("   \\()8`-._  `.   .'  _.-'8()/     ");
        System.out.println("   (88\"   ::.  \\./  .::   \"88)     ");
        System.out.println("    \\_.'`-::::.(#).::::-'`._/      ");
        System.out.println("      `._... .q(_)p. ..._.'         ");
        System.out.println("        \"\"-..-'|=|`-..-\"\"       ");
        System.out.println("        .\"\"' .'|=|`. `\"\".       ");
        System.out.println("      ,':8(o)./|=|\\.(o)8:`.        ");
        System.out.println("     (O :8 ::/ \\_/ \\:: 8: O)      ");
        System.out.println("      \\O `::/       \\::' O/       ");
        System.out.println("       \"\"--'         `--\"\"   hjw");
    }

    public static void elephant()
    {
        System.out.println("       _..--\"\"-.                  .-\"\"--.._ ");
        System.out.println("   _.-'         \\ __...----...__ /         '-._");
        System.out.println(" .'      .:::...,'              ',...:::.      '.");
        System.out.println("(     .'``'''::;                  ;::'''``'.     )");
        System.out.println(" \\             '-)              (-'             /");
        System.out.println("  \\             /                \\             /");
        System.out.println("   \\          .'.-.            .-.'.          /");
        System.out.println("    \\         | \\0|            |0/ |         /");
        System.out.println("    |          \\  |   .-==-.   |  /          |");
        System.out.println("     \\          `/`;          ;`\\`          /");
        System.out.println("      '.._      (_ |  .-==-.  | _)      _..'");
        System.out.println("          `\"`\"-`/ `/'        '\\` \\`-\"`\"`");
        System.out.println("               / /`;   .==.   ;`\\ \\");
        System.out.println("         .---./_/   \\  .==.  /   \\ \\");
        System.out.println("        / '.    `-.__)       |    `\"");
        System.out.println("       | =(`-.        '==.   ;");
        System.out.println(" jgs    \\  '. `-.           /");
        System.out.println("         \\_:_)   `\"--.....-'");
    }

    public static void teddybear()
    {
        System.out.println("            ___   .--. ");
        System.out.println("      .--.-\"   \"-' .- |");
        System.out.println("     / .-,`          .'");
        System.out.println("     \\   `           \\");
        System.out.println("      '.            ! \\");
        System.out.println("        |     !  .--.  |");
        System.out.println("        \\        '--'  /.____");
        System.out.println("       /`-.     \\__,'.'      `\\");
        System.out.println("    __/   \\`-.____.-' `\\      /");
        System.out.println("    | `---`'-'._/-`     \\----'    _");
        System.out.println("    |,-'`  /             |    _.-' `\\");
        System.out.println("   .'     /              |--'`     / |");
        System.out.println("  /      /\\              `         | |");
        System.out.println("  |   .\\/  \\      .--. __          \\ |");
        System.out.println("   '-'      '._       /  `\\         /");
        System.out.println("      jgs      `\\    '     |------'`");
        System.out.println("                 \\  |      |");
        System.out.println("                  \\        /");
        System.out.println("                   '._  _.'");
        System.out.println("                      ``");

    }

    public static void snake()
    {
        System.out.println("         ,,'6''-,.");
        System.out.println("        <====,.;;--.");
        System.out.println("        _`---===. \"\"\"==__");
        System.out.println("      //\"\"@@-\\===\\@@@@ \"\"\\\\");
        System.out.println("     |( @@@  |===|  @@@  ||");
        System.out.println("      \\\\ @@   |===|  @@  //");
        System.out.println("        \\\\ @@ |===|@@@ //");
        System.out.println("         \\\\  |===|  //");
        System.out.println("___________\\\\|===| //_____,----\"\"\"\"\"\"\"\"\"\"-----,_");
        System.out.println("  \"\"\"\"---,__`\\===`/ _________,---------,____    `,");
        System.out.println("             |==||                           `\\   \\");
        System.out.println("            |==| |          pb                 )   |");
        System.out.println("           |==| |       _____         ______,--'   '");
        System.out.println("           |=|  `----\"\"\"     `\"\"\"\"\"\"\"\"         _,-'");
        System.out.println("            `=\\     __,---\"\"\"-------------\"\"\"''");
        System.out.println("                \"\"\"\"		");
    }
}

import java.util.Random;

public class FlickerPhrase
{
    public static void main( String[] args )
    {
        Random rng = new Random();
        int r;

        for ( int i=0; i<100000; i++ )
        {
            r = 1 + rng.nextInt(5);
            // Write five if statements here.
            // If r is 1, then call the function named 'first'.
            // If r is 2, then call the function named 'second', and so on.

            // Optional: after the if statements are over, add in a slight delay.
        }

        System.out.println("I pledge allegiance to the flag.");
    }

    public static void first()
    {
        System.out.print("I                               \r");
    }

    public static void second()
    {
        System.out.print("  pledge                        \r");
    }

    public static void third()
    {
        System.out.print("         allegiance             \r");
    }

    public static void fourth()
    {
        System.out.print("                    to the      \r");
    }

    public static void fifth()
    {
        System.out.print("                           flag.\r");
    }
}

public class HeronsFormula
{
    public static void main( String[] args )
    {
        double a;

        a = triangleArea(3, 3, 3);
        System.out.println("A triangle with sides 3,3,3 has an area of " + a );

        a = triangleArea(3, 4, 5);
        System.out.println("A triangle with sides 3,4,5 has an area of " + a );

        a = triangleArea(7, 8, 9);
        System.out.println("A triangle with sides 7,8,9 has an area of " + a );

        System.out.println("A triangle with sides 5,12,13 has an area of " + triangleArea(5, 12, 13) );
        System.out.println("A triangle with sides 10,9,11 has an area of " + triangleArea(10, 9, 11) );
        System.out.println("A triangle with sides 8,15,17 has an area of " + triangleArea(8, 15, 17) );
    }

    public static double triangleArea( int a, int b, int c )
    {
        // the code in this function computes the area of a triangle whose sides have lengths a, b, and c
        double s, A;

        s = (a+b+c) / 2;
        A = Math.sqrt( s*(s-a)*(s-b)*(s-c) );

        return A;
        // ^ after computing the area, "return" it
    }
}

public class DistanceFormula
{
    public static void main( String[] args )
    {
        // test the formula a bit
        double d1 = distance(-2,1 , 1,5);
        System.out.println(" (-2,1) to (1,5) => " + d1 );

        double d2 = distance(-2,-3 , -4,4);
        System.out.println(" (-2,-3) to (-4,4) => " + d2 );

        System.out.println(" (2,-3) to (-1,-2) => " + distance(2,-3,-1,-2) );

        System.out.println(" (4,5) to (4,5) => " + distance(4,5,4,5) );
    }

    public static double distance( int x1, int y1, int x2, int y2 )
    {
        // put your code up in here
    }
}

public static double distance( int x1, int y1, int x2, int y2 )
{
    return Math.sqrt( Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2) );
}

public class MonthName
{
    public static String month_name( int month )
    {
        String result;
        // Your code goes in here.

        return result;
    }


    public static void main( String[] args )
    {
        System.out.println( "Month 1: " + month_name(1) );
        System.out.println( "Month 2: " + month_name(2) );
        System.out.println( "Month 3: " + month_name(3) );
        System.out.println( "Month 4: " + month_name(4) );
        System.out.println( "Month 5: " + month_name(5) );
        System.out.println( "Month 6: " + month_name(6) );
        System.out.println( "Month 7: " + month_name(7) );
        System.out.println( "Month 8: " + month_name(8) );
        System.out.println( "Month 9: " + month_name(9) );
        System.out.println( "Month 10: " + month_name(10) );
        System.out.println( "Month 11: " + month_name(11) );
        System.out.println( "Month 12: " + month_name(12) );
        System.out.println( "Month 43: " + month_name(43) );
    }
}

public static String month_name( int month )
{
    String result;
    if ( month == 1 )
    {
        result = "January";
    }
    else if ( month == 2 )
    {
        result = "February";
    }
    else if ( month == 3 )
    {
        result = "March";
    }
    else if ( month == 4 )
    {
        result = "April";
    }
    else if ( month == 5 )
    {
        result = "May";
    }
    else if ( month == 6 )
    {
        result = "June";
    }
    else if ( month == 7 )
    {
        result = "July";
    }
    else if ( month == 8 )
    {
        result = "August";
    }
    else if ( month == 9 )
    {
        result = "September";
    }
    else if ( month == 10 )
    {
        result = "October";
    }
    else if ( month == 11 )
    {
        result = "November";
    }
    else if ( month == 12 )
    {
        result = "December";
    }
    else
    {
        result = "error";
    }

    return result;
}

public class MonthOffset
{
    public static int month_offset( int month )
    {
        int result;
        // Your code goes in here.

        return result;
    }

    public static void main( String[] args )
    {
        System.out.println( "Offset for month 1: " + month_offset(1) );
        System.out.println( "Offset for month 2: " + month_offset(2) );
        System.out.println( "Offset for month 3: " + month_offset(3) );
        System.out.println( "Offset for month 4: " + month_offset(4) );
        System.out.println( "Offset for month 5: " + month_offset(5) );
        System.out.println( "Offset for month 6: " + month_offset(6) );
        System.out.println( "Offset for month 7: " + month_offset(7) );
        System.out.println( "Offset for month 8: " + month_offset(8) );
        System.out.println( "Offset for month 9: " + month_offset(9) );
        System.out.println( "Offset for month 10: " + month_offset(10) );
        System.out.println( "Offset for month 11: " + month_offset(11) );
        System.out.println( "Offset for month 12: " + month_offset(12) );
        System.out.println( "Offset for month 43: " + month_offset(43) );
    }
}

public static int month_offset( int month )
{
    int result;
    if ( month == 1 )
    {
        result = 1;
    }
    else if ( month == 2 )
    {
        result = 4;
    }
    else if ( month == 3 )
    {
        result = 4;
    }
    else if ( month == 4 )
    {
        result = 0;
    }
    else if ( month == 5 )
    {
        result = 2;
    }
    else if ( month == 6 )
    {
        result = 5;
    }
    else if ( month == 7 )
    {
        result = 0;
    }
    else if ( month == 8 )
    {
        result = 3;
    }
    else if ( month == 9 )
    {
        result = 6;
    }
    else if ( month == 10 )
    {
        result = 1;
    }
    else if ( month == 11 )
    {
        result = 4;
    }
    else if ( month == 12 )
    {
        result = 6;
    }
    else
    {
        result = -1;
    }

    return result;
}

import java.util.Scanner;

public class WeekdayCalculator
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        System.out.println("Welcome to Mr. Mitchell's fantastic birth-o-meter!");
        System.out.println();
        System.out.println("All you have to do is enter your birth date, and it will");
        System.out.println("tell you the day of the week on which you were born.");
        System.out.println();
        System.out.println("Some automatic tests....");
        System.out.println("12 10 2003 => " + weekday(12,10,2003));
        System.out.println(" 2 13 1976 => " + weekday(2,13,1976));
        System.out.println(" 2 13 1977 => " + weekday(2,13,1977));
        System.out.println(" 7  2 1974 => " + weekday(7,2,1974));
        System.out.println(" 1 15 2003 => " + weekday(1,15,2003));
        System.out.println("10 13 2000 => " + weekday(10,13,2000));
        System.out.println();

        System.out.println("Now it's your turn!  What's your birthday?");
        System.out.print("Birth date (mm dd yyyy): ");
        int mm = keyboard.nextInt();
        int dd = keyboard.nextInt();
        int yyyy = keyboard.nextInt();

        // put a function call for weekday() here
        System.out.println("You were born on ");
    }

    public static String weekday( int mm, int dd, int yyyy )
    {
        int yy, total;
        String date = "";

        // bunch of calculations go here

        date = month_name(mm) + ", " + yyyy;

        return date;
    }

    // paste your functions from MonthName, WeekdayName, and MonthOffset here

    public static boolean is_leap( int year )
    {
        // years which are evenly divisible by 4 are leap years,
        // but years divisible by 100 are not leap years,
        // though years divisible by 400 are leap years
        boolean result;

        if ( year%400 == 0 )
            result = true;
        else if ( year%100 == 0 )
            result = false;
        else if ( year%4 == 0 )
            result = true;
        else
            result = false;

        return result;
    }
}

public static String weekday( int mm, int dd, int yyyy )
{
    int yy, total;
    String date = "";

    yy = yyyy - 1900;
    total = yy / 4;
    total += yy;
    total += dd;
    total += month_offset(mm);
    if ( is_leap(yyyy) && (mm == 1 || mm == 2) )
    {
        total -= 1;
    }

    date = weekday_name(total % 7) + ", " + month_name(mm) + " " + dd + ", " + yyyy;

    return date;
}

public static String weekday_name( int weekday )
{
    String result = "";

    if ( weekday == 1 )
    {
        result = "Sunday";
    }
    else if ( weekday == 2 )
    {
        result = "Monday";
    }
    else if ( weekday == 3 )
    {
        result = "Tuesday";
    }
    else if ( weekday == 4 )
    {
        result = "Wednesday";
    }
    else if ( weekday == 5 )
    {
        result = "Thursday";
    }
    else if ( weekday == 6 )
    {
        result = "Friday";
    }
    else if ( weekday == 0 )
    {
        result = "Saturday";
    }
    else
    {
        result = "error";
    }

    return result;
}

public static int month_offset( int month )
{
    int result;

    if ( month == 1 )
    {
        result = 1;
    }
    else if ( month == 2 )
    {
        result = 4;
    }
    else if ( month == 3 )
    {
        result = 4;
    }
    else if ( month == 4 )
    {
        result = 0;
    }
    else if ( month == 5 )
    {
        result = 2;
    }
    else if ( month == 6 )
    {
        result = 5;
    }
    else if ( month == 7 )
    {
        result = 0;
    }
    else if ( month == 8 )
    {
        result = 3;
    }
    else if ( month == 9 )
    {
        result = 6;
    }
    else if ( month == 10 )
    {
        result = 1;
    }
    else if ( month == 11 )
    {
        result = 4;
    }
    else if ( month == 12 )
    {
        result = 6;
    }
    else
    {
        result = -1;
    }

    return result;
}

public static String month_name( int month )
{
    String result;

    if ( month == 1 )
    {
        result = "January";
    }
    else if ( month == 2 )
    {
        result = "February";
    }
    else if ( month == 3 )
    {
        result = "March";
    }
    else if ( month == 4 )
    {
        result = "April";
    }
    else if ( month == 5 )
    {
        result = "May";
    }
    else if ( month == 6 )
    {
        result = "June";
    }
    else if ( month == 7 )
    {
        result = "July";
    }
    else if ( month == 8 )
    {
        result = "August";
    }
    else if ( month == 9 )
    {
        result = "September";
    }
    else if ( month == 10 )
    {
        result = "October";
    }
    else if ( month == 11 )
    {
        result = "November";
    }
    else if ( month == 12 )
    {
        result = "December";
    }
    else
    {
        result = "error";
    }

    return result;
}

public static boolean is_leap( int year )
{
    boolean result;

    if ( year%400 == 0 )
        result = true;
    else if ( year%100 == 0 )
        result = false;
    else if ( year%4 == 0 )
        result = true;
    else
        result = false;

    return result;
}

import java.util.Scanner;

public class AreaCalculator
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        System.out.println("Shape Area Calculator version 0.1 (c) 2005 Mitchell Sample Output, Inc.");

        int choice;
        do
        {
            System.out.println("\n-=-=-=-=-=-=-=-=-=-=-=-=-=-\n");
            System.out.println("1) Triangle");
            System.out.println("2) Rectangle");
            System.out.println("3) Square");
            System.out.println("4) Circle");
            System.out.println("5) Quit");
            System.out.print("Which shape: ");
            choice = keyboard.nextInt();

            if ( choice == 1 )
            {
                System.out.print("\nBase: ");
                int base = keyboard.nextInt();
                System.out.print("Height: ");
                int height = keyboard.nextInt();
                System.out.printf("\nThe area is %s.\n", area_triangle(base, height));
            }
            else if ( choice == 2 )
            {
                System.out.print("\nLength: ");
                int length = keyboard.nextInt();
                System.out.print("Width: ");
                int width = keyboard.nextInt();
                System.out.printf("\nThe area is %s.\n", area_rectangle(length, width));
            }
            else if ( choice == 3 )
            {
                System.out.print("\nSide length: ");
                int side = keyboard.nextInt();
                System.out.printf("\nThe area is %s.\n", area_square(side));
            }
            else if ( choice == 4 )
            {
                System.out.print("\nRadius: ");
                int radius = keyboard.nextInt();
                System.out.printf("\nThe area is %.4s.\n", area_circle(radius));
            }
        } while ( choice != 5 );

        System.out.println("\nGoodbye.");
    }

    public static double area_circle( int radius )
    {
        return Math.PI * Math.pow(radius, 2);
    }

    public static int area_rectangle( int length, int width )
    {
        return length * width;
    }

    public static int area_square( int side )
    {
        return (int) Math.pow(side, 2);
    }

    public static int area_triangle( int base, int height )
    {
        return (int) (0.5 * base * height);
    }
}

// Function Call Alphabet - Yet another program to practice functions, but this time it's function calls only.

public class FunctionCallAlphabet
{
    public static void main( String[] args )
    {
        // ???? a( ???? );    // displays a word beginning with A
        // ???? b( ???? );    // returns the word to be displayed
        // ???? c( ???? );    // pass it 'true' and it will display a word beginning with C
        // ???? d( ???? );    // displays a word beginning with D
        // ???? e( ???? );    // pass it the number of letters to display (9)
        // ???? f( ???? );    // displays the word you pass it beginning with "F"
        // ???? g( ???? );    // returns the word to be displayed
        // ???? h( ???? );    // tell it how many times to display the word (1)
        System.out.println();

        // ???? i( ???? );    // pass it any integer and it will display a word beginning with I
        // ???? j( ???? );    // returns a different word depending on what you pass it (1-3)
        // ???? k( ???? );    // displays a word beginning with K
        // ???? l( ???? );    // displays a different word depending on the two booleans you pass it
        // ???? m( ???? );    // displays a different word depending on the two booleans you pass it
        // ???? n( ???? );    // displays the word you pass it beginning with "N"
        // ???? o( ???? );    // displays a word beginning with O and returns a useless value
        // ???? p( ???? );    // returns the word to be displayed
        // ???? q( ???? );    // displays the word
        System.out.println();

        // ???? r( ???? );    // returns a different word depending on if you pass it 'true' or 'false'
        // ???? s( ???? );    // pass it the number of letters to display (6)
        // ???? t( ???? );    // displays the word you pass it beginning with "T"
        // ???? u( ???? );    // returns the word to be displayed
        // ???? v( ???? );    // tell it how many times to display the word (1)
        // ???? w( ???? );    // pass it any integer and it will display a word beginning with W
        // ???? x( ???? );    // returns a different word depending on what you pass it (1-2)
        // ???? y( ???? );    // displays a word beginning with Y
        // ???? z( ???? );    // returns a different word depending on which two boolean values you pass it
        System.out.println();
    }

    /**************************************
    * Don't change anything below here!! *
    *************************************/

    public static void a()
    {
        System.out.print("Ant ");
    }

    public static String b()
    {
        return "Banana ";
    }

    public static void c(boolean doit)
    {
        if ( doit )
            System.out.print("Crocodile ");
    }

    public static void d()
    {
        System.out.print("Doggie ");
    }

    public static void e(int howmany)
    {
        String s;
        s = "Elephant ";
        int x = 0;
        while ( x < howmany )
        {
            System.out.print( s.charAt(x) );
            x = x+1;
        }

    }

    public static void f(String word)
    {
        System.out.print(word + " ");
    }

    public static String g()
    {
        return "Gorilla ";
    }

    public static void h(int reps)
    {
        int x = 0;
        while ( x < reps )
        {
            System.out.print("Horseradish ");
            x = x+1;
        }

    }

    public static void i(int ignoredparameter)
    {
        ignoredparameter = 32;
        String space = Character.toString( (char) ignoredparameter );
        System.out.print("Ice_cream" + space);
    }

    public static String j(int whichone)
    {
        if ( whichone == 1 )
            return "Jambalaya ";
        else if ( whichone == 2 )
            return "Juniper ";
        else
            return "Jackrabbit ";
    }

    public static void k()
    {
        // the bird OR the fruit
        System.out.print("Kiwi ");
    }

    public static void l(boolean a, boolean b)
    {
        if ( a && b )
            System.out.print("Lettuce ");
        else
            System.out.print("Lhasa_apso ");
    }

    public static void m(boolean a, boolean b)
    {
        if ( a || b )
            System.out.print("Mango ");
        else
            System.out.print("Monkey! ");
    }

    public static void n(String word)
    {
        System.out.print(word + " ");
    }

    public static int o()
    {
        System.out.print("Orangutan ");
        return 1;	// just for kicks; the return value doesn't mean anything
    }

    public static String p()
    {
        return "Parrot ";
    }

    public static void q()
    {
        System.out.print("Quail ");
    }

    public static String r(boolean first)
    {
        if ( first )
            return "Rabbit ";
        else
            return "Radish ";
    }

    public static void s(int howmany)
    {
        String s;
        s = "Snake ";
        int x = 0;
        while ( x < howmany )
        {
            System.out.print( s.charAt(x) );
            x = x+1;
        }
    }

    public static void t(String word)
    {
        System.out.print(word + " ");
    }

    public static String u()
    {
        return "Ugli_fruit ";
    }

    public static void v(int reps)
    {
        int x = 0;
        while ( x < reps )
        {
            System.out.print("Valentine_candy ");
            x = x+1;
        }
    }

    public static void w(int ignoredparameter)
    {
        ignoredparameter = 32;
        String space = Character.toString( (char) ignoredparameter );
        System.out.print("Walrus" + space);
    }

    public static String x(int whichone)
    {
        if ( whichone == 1 )
            return "X_files ";
        else
            return "X_men ";
    }

    public static void y()
    {
        System.out.print("Yams ");
    }

    public static String z(boolean a, boolean b)
    {
        if ( a || b )
            return "Zanahorias ";
        else
            return "Zebra ";
    }
}

public static void main( String[] args )
{
    a();
    System.out.print( b() );
    c(true);
    d();
    e(9);
    f("Frog ");
    System.out.print( g() );
    h(1);
    System.out.println();

    i(32);
    System.out.print( j(3) );
    k();
    l(true, false);
    m(false, false);
    n("Narwhal ");
    o();
    System.out.print( p() );
    q();
    System.out.println();

    System.out.print( r(true) );
    s(6);
    t("Thyme ");
    System.out.print( u() );
    v(1);
    w(32);
    System.out.print( x(2) );
    y();
    System.out.print( z(true, false) );
    System.out.println();
}

// Fill-In Functions - Fix the broken functions and function calls.

public class FillInFunctions
{
    public static void main( String[] args )
    {
        // Fill in the function calls where appropriate.

        System.out.println("Watch as we demonstrate functions.");

        System.out.println();
        System.out.println("I'm going to get a random character from A-Z");
        char c = '!';
        // randchar();
        System.out.println("The character is: " + c );

        System.out.println();
        System.out.println("Now let's count from -10 to 10");
        int begin, end;
        begin = -10;
        end = 10;
        // counter();
        System.out.println("How was that?");

        System.out.println();
        System.out.println("Now we take the absolute value of a number.");
        int x, y = 99;
        x = -10;
        // abso();
        System.out.println("|" + x + "| = " + y );

        System.out.println();
        System.out.println("That's all.  This program has been brought to you by:");
        // credits();
    }

/*
    public static ???? credits( ???? )
    // No parameters.
    {
        // displays some boilerplate text saying who wrote this program, etc.

        System.out.println();
        System.out.println("programmed by Graham Mitchell");
        System.out.println("modified by [your name here]");
        System.out.print("This code is distributed under the terms of the standard ");
        System.out.println("BSD license.  Do with it as you wish.");

        return ??;
    }
*/

/*
    public static ???? randchar( ???? )
    // No parameters.
    {
        // chooses a random character in the range "A" to "Z"

        int numval;
        char charval;

        // pick a random number from 0 to 25
        numval = (int)(Math.random()*26);
        // now add that offset to the value of the letter 'A'
        charval = (char) ('A' + numval);

        return ??;
    }
*/

/*
    public static ???? counter( ???? )
    // Parameters are:
    //     int start;
    //     int stop;
    {
        // counts from start to stop by ones
        int ctr;

        ctr = start;
        while ( ctr <= stop )
        {
            System.out.print(ctr + " ");
            ctr = ctr+1;
        }

        return ??;
    }
*/

/*
    public static ???? abso( ???? )
    // Parameters are:
    //     int value;
    {
        // finds the absolute value of the parameter
        int absval;

        if ( value < 0 )
            absval = -value;
        else
            absval = value;

        return ??;
    }
*/

}

public static void main( String[] args )
{
    // Fill in the function calls where appropriate.

    System.out.println("Watch as we demonstrate functions.");

    System.out.println();
    System.out.println("I'm going to get a random character from A-Z");
    char c = '!';
    c = randchar();
    System.out.println("The character is: " + c );

    System.out.println();
    System.out.println("Now let's count from -10 to 10");
    int begin, end;
    begin = -10;
    end = 10;
    counter(begin, end);
    System.out.println("How was that?");

    System.out.println();
    System.out.println("Now we take the absolute value of a number.");
    int x, y = 99;
    x = -10;
    y = abso(x);
    System.out.println("|" + x + "| = " + y );

    System.out.println();
    System.out.println("That's all.  This program has been brought to you by:");
    credits();
}

public static void credits()
// No parameters.
{
    // displays some boilerplate text saying who wrote this program, etc.

    System.out.println();
    System.out.println("programmed by Graham Mitchell");
    System.out.println("modified by [your name here]");
    System.out.print("This code is distributed under the terms of the standard ");
    System.out.println("BSD license.  Do with it as you wish.");
}

public static char randchar()
// No parameters.
{
    // chooses a random character in the range "A" to "Z"

    int numval;
    char charval;

    // pick a random number from 0 to 25
    numval = (int)(Math.random()*26);
    // now add that offset to the value of the letter 'A'
    charval = (char) ('A' + numval);

    return charval;
}

public static void counter( int start, int stop )
// Parameters are:
//     int start;
//     int stop;
{
    // counts from start to stop by ones
    int ctr;

    ctr = start;
    while ( ctr <= stop )
    {
        System.out.print(ctr + " ");
        ctr = ctr+1;
    }
}

public static int abso( int value )
// Parameters are:
//     int value;
{
    // finds the absolute value of the parameter
    int absval;

    if ( value < 0 )
        absval = -value;
    else
        absval = value;

    return absval;
}