Program 1: CPS 008, Spring 1995
Owen Astrachan
due: January 31, 8:00 am, 20 points


******Introduction

This assignment covers material through chapter 3 of the text.  This
covers I/O, user-defined functions, and classes.

In order to do this assignment you should create a subdirectory named
prog1 in your cps08 directory (see the first Unix/Emacs/C++ lab if you
haven't yet created a cps08 directory).  You'll need to copy a few files
into this directory to facilitate the programs you'll write.  Follow the
steps below to do this:

Change into the prog1 directory using the cd command (use mkdir to
create the directory if you need to).  Verify that you're in the right
directory using the pwd command (print working directory).

Type cp ~ola/cps08/prog1/* . which will copy all the files from the
directory ~ola/cps08/prog1 into your directory.  Don't forget the
trailing period, or dot.  If you do, you might get an error message
something like "Permission denied".

This should copy two files

Makefile
fly.cc


Verify that these files have been copied by typing ls to see all
the files in the current directory.

*****Programs to write

You'll write three programs for this assignment.

Beverage Song (6 points)

Write the program described in Exercise 3.5 on page 92 of the text.
Feel free to embellish it.  You should name the program 
beverage.cc. To compile from within emacs, type C-x c (to invoke
the compile command) and then typing make beverage.  This will
invoke the g++ compiler and generate an executable file named
beverage that you can run from an xterm window.  If there errors
you can use the C-x ` to cycle through them.  Your program should
prompt the user for the name of the beverage and the initial number of
bottles.  It should then print 3 verses of the song.  



Programs Printing Programs (6 points)

You must write a program named nameprog.cc whose output will be similar
to that described in Exercise 2.3 on pages 54-55 of the text.  The
output of nameprog will be a program that, if it were compiled and
executed, would print a greeting for the name the user enters as shown
below.

----- program run --------------------

enter a name: Bjarne

#include <iostream.h>

main()
{
    cout << "Hello Bjarne" << endl;@
}

-----------------------------------------

You'll need to use the escape sequence \" to print a double
quote.  When you've entered the program you can compile it from within
emacs by typing C-x c (to invoke the compile command) and then
typing make nameprog.   This will invoke the g++ compiler and
create an executable file nameprog.


Balloon (6 points)

Write a program named fly.cc similar to the program asked for in
Exercise 3.7 on page 93 of the text.  However, in your program after the
balloon rises to the specified altitude, the user should then be
prompted for a number of meters to descend, say .  The balloon should
then descend to a height that is  meters less than the height first
ascended to.  Skip step 3 in Exercise 3.7, cruise for the same number of
time steps initially specified by the user.

For example, if the user first enters 50 meters when prompted for the
altitude, then enters 12 meters to descend, the balloon should descend
to 38 meters (50-12).  The number of meters
 to descend is relative to the initial ascent height.



Submit

You should create a README file as described for the first
lab.  In it you put the time you spent on the assignment, the
names of people with whom you collaborated, and any thoughts on the
assignment.  To submit, use

    submit08 prog1 README fly.cc beverage.cc nameprog.cc

The README file is worth 2 points.


Extra Credit

You can earn extra points by doing exercises 2.8 -- 2.11 on page 68 of
the excursion section in Chapter 2.  Ideally, you should type the
answers and submit them electronically.  However, you may also submit
written hardcopy by handing the answers in at the beginning of class.

To submit electronically:

    submit08 prog1Xtra README 



Where the README file contains your answers.  This can earn up to 5
extra points.