ITEC 320 2018fall nokie ibarland

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a first Ada program
hw01: gradepoints

due: Sep.05 (Wed) 15:00, D2L and hardcopy

Last modified:
Change log:

• 2018-Aug-31: due-date's time-of-day corrected.

tip: In class last semester we came up with this list of steps for this assignment.

This program will help you learn how to

• create, compile, and run an Ada program
• declare strings, integers, floats, and constants
• calculate with floats and integer variables
• convert types
• write strings and formatted integers and floats

Your program should produce output similar to the following:

Sample 1: rucs:ibarland/itec320/hw01> ./gradepoints
My name: Joe Jones
Hours: 30
GPA: 3.500
Grade Points: 105.0
Points above: 45.0

Sample 2: rucs:ibarland/itec320/hw01> gradepoints
My name: Jack Spratt
Hours: 40
GPA: 1.500
Grade Points: 60.0
Points below: 20.0

Program to Modify: Modify the program below so that it reflects you.

-- File: gradepoints.adb
-- Name: 
-- Date: 

-- Purpose: Calculate points surplus or deficit
--          based on hours taken and GPA

with Ada.Text_IO; use Ada.Text_IO;
with Ada.Float_Text_IO; use Ada.Float_Text_IO;
with Ada.Integer_Text_IO; use Ada.Integer_Text_IO;

procedure gradepoints is   -- Personal data  to be modified
   name: constant String := "Joe Jones";      -- Student name
   hours_attempted: constant Natural := 30;   -- Hours taken
   gpa: constant Float := 3.5;                -- Current GPA
   -- End of personal data  to be modified

   earned_points: Float;             -- Points actually attained

   -- Requirements
   Required_GPA: constant := 2.0;     -- GPA required to graduate
   required_points: Float;            -- Points needed to graduate

   -- Points calculations
   surplus, deficit: Float;           -- Points above or below required

begin
   -- Calculation
   earned_points := Float(hours_attempted) * gpa;
   required_points := Required_GPA * Float(hours_attempted);

   -- Calculate both even though one will not be needed
   surplus := earned_points - required_points; 
   deficit := required_points - earned_points;

   -- Output
   put_line("Name: " & name);
   put_line("Hours:" & hours_attempted'img);

   put("GPA: ");
   put(item => gpa, fore => 1, aft => 3, exp => 0);
   new_line;

   put("Grade Points: ");
   put(earned_points, 1, 2, 0);
   new_line;

   -- Surplus or deficit
   if earned_points = Required_GPA then
      put("Exact: ");
      put(gpa, fore => 1, aft => 2, exp => 0);
      new_line;
   elsif earned_points >= Required_GPA then
      put("Points above: ");
      put(surplus, fore => 1, aft => 2, exp => 0);
      new_line;
   else
      put("Points below: ");
      put(deficit, fore => 1, aft => 2, exp => 0);
      new_line;
   end if;

end gradepoints;

• This program has no input. Edit the program to include your data.
• Your output should be formatted as in the samples.
• Be careful with spaces in front of numbers and with number formatting.

Creating your adb file: Your data file can be created with any editor, but don't use an editor (such as wordpad) that stores characters using 16 rather than 8 bits. Also don't use an editor that creates an RTF (ie rich text) file. If you use AdaGIDE or GPS, then this will not be a problem.

Compilers: The Ada compiler gnat and the Ada IDE's AdaGide and GPS are installed on department machines. AdaGide is easier to use, but GPS has more features. You can also use the gnat compiler using the command line with a local shell or by using a terminal window (eg putty) to login to a local Linux machine called rucs. To use putty from off campus you must first be running a VPN session.

You may also want to install these tools on your personal machine. The site www.adacore.com/community has a installers for the GNAT compiler (which also installs gps) for a variety of platforms. AdaGIDE is available from adagide.martincarlisle.com. Make sure that you install gnat before installing adagide. An Eclipse plugin is available from the Adacore site. Another source for gnat is getadanow.com.

More instructions on compilers is available here and here

Submission: ibarland section Submit the one file gradepoints.adb in the D2L dropbox.You do not need to submit any data files.

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