HOMEWORK PROBLEM 1         INTRODUCTION TO Ada'95     586.1

  PURPOSE:      To gain experience with IF-THEN-ELSE Ada structures
                Introduction to Text_IO  Get, Put, Put_Line
                Single procedure main program structure
                Handling Text_IO exceptions
                Learning to compile and run Ada programs

  END RESULT:   A complete Ada program that is a single procedure
                that compiles and executes with no errors

  PROBLEM:      Use the skeleton structure from the attached change.adb
                or change2.adb  and add your code to compute change for an
                Amount between  1 and 99 cents. Print number of quarters,
                dimes, nickels, and pennies with reasonable structure.
                Zero counts for coins are not to be printed out.
                Use an exception handler to catch bad input.
                Get starter files from ECLUS::DISK2:[ADA.ADA95]CHANGE*.* or
                FTP from sigpro.md.essd.northgrum.com/pub/ada95  or
                get from floppy disk available in class.

  TURN IN:      Printout of compilation ( with no errors!)
                Printout of execution for test data (in order)
                99    94    25    10    5    1    -5  100  ABC  1 <eof>
                or use change.dat .

  OBSERVE:      The input to Ada programs uses the operating system
                terminal handler. Thus nothing might happen until a <cr>
                is typed ( this allows for input line editing ).

  METHOD:       In learning a new programming language it is most
                efficient to do it interactively. Before trying the
                first homework it is recommended that you type in
                the sample program that follows. Try the emacs editor
                or other editor of your choice. Compile interactively
                if your system provides the capability. Use the debugger
                only if desperate, usually not needed with Ada.
                Then set up .BAT or make for the "production" runs.
                This will get the mechanics of the procedures established
                for the rest of the course.

  EXTRA CREDIT: Do not change 1..99 to 0..99 or Integer or natural for any
                variable. In other words never try to store a zero.
                You may eliminate the Variables Quarters, Dimes, Nickels and
                Pennies if you do not need them. You can add a
                Constraint_Error exception handler if you wish.

  READING:      BARNES 5.2, 7.1, 14.1
                ISO 8652:1995 2.2, 5.3, 11.2
 

  COMMANDS: DOS, Windows 95, NT or Unix
 
                gcc -c change.adb
                gnatbl change.ali
                change.exe < change.dat

                gnatchop change.ada   writes file   change.adb