public class Main {

    public static void main( String[] args )
    { 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: " + randchar() +" (or whatever)" );

        System.out.println();
        System.out.println("Now let's count from -10 to 10");
        int begin, end;
        begin = -10;
        end = 10;
        counter(-10, 10);
        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(-10);
        System.out.println("|" + x + "| = " + abso(x) );

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

    public static String credits()

    { String result="";
        String name="Ian Ogilvie-Browne";
        System.out.println();
        System.out.println("programmed by Graham Mitchell");
        System.out.println("modified by "+name);
        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 result;
    }

    public static char randchar()

    { int numval;
        char charval;
        numval = (int)(Math.random()*26);
        charval = (char) ('A' + numval);
        return charval;
    }

    public static int counter(int start, int stop)

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

    public static int abso( int value )
    {
        int absval;
        if ( value < 0 )
            absval = -value;
        else
            absval = value;
        return absval;
    }
}