Description
Lab 2 – 20 Points to Ravenclaw
Overview
Student wizards and witches are taught at the famous Hogwarts School of Witchcraft and Wizardry. This noble school has produced some of the finest magical students the World has ever seen.
During the school year – full of potions, spells, Quidditch, and various students being maimed – each House is awarded points by the faculty. At the end of the term, the House with the most points wins the prestigious House Cup!
These points can be earned by academics, winning contests, bravery, etc… The points can also be lost by breaking rules, poor academics, etc…
You are going to use the odd Muggle technology called “computers” to create a simple program to keep track of points. You will input the number of students that have earned/loss points in different categories. At the end, display how many points were earned.
Sample Run
The following is a sample run of the program. The user’s input is printed in blue. The data outputted from your calculations is printed in red.
Getting an A : 27 points Cleaning your robes : 5 points Being late to class : -11 points How many students got A's? 4 How many students cleaned their robes? 2 How many students were late to class? 3 Ravenclaw gained 85 points! Information text Prompt the user Calculated output |
Requirements
You must think of a solution on your own. The requirements are as follows:
1. Come up with 3 of your categories. Don’t use mine. 2. Display a table to the screen. Please see above.
3. Display a prompt, to the user, for each student count. 4. Input the number of students for each category.
5. Calculate the total number of points. Tip: use a register to create a running total. 6. Output the total number of points with some helpful text.
Hints
- Start off by getting the first multiplication to work and print the correct value.
- Now work on each of the requirements below one at a time. You will turn in the final program, but incremental
design is best for labs.
Submitting Your Lab
Run Alpine by typing the following and, then, enter your username and password.
Please send an e-mail to yourself (on your Outlook, Google account) to check if Alpine is working. To submit your lab, send the source file (not a.out or the object file) to:
UNIX Commands
Editing
2
alpine
|
Action |
Command |
Notes |
|
Edit File |
nano filename |
“Nano” is an easy to use text editor. |
|
|
alpine |
“Alpine” is text-based e-mail application. You will e-mail your assignments it. |
|
Assemble File |
as -o objectfile asmfile |
Don’t mix up the objectfile and asmfile fields. It will destroy your program! |
|
Link File |
ld -o exefile objectfiles |
Link and create an executable file from one (or more) object files |
Folder Navigation
3
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Action |
Command |
Description |
|
Change current folder |
cd foldername |
“Changes Directory” |
|
Go to parent folder |
cd .. |
Think of it as the “back button”. |
|
Show current folder |
pwd |
Gives a file path |
|
List files |
ls |
Lists the files in current directory. |
File Organization
|
Action |
Command |
Description |
|
Create folder |
mkdir foldername |
Folders are called directories in UNIX. |
|
Copy file |
cp oldfile newfile |
Make a copy of an existing file |
|
Move file |
mv filename foldername |
Moves a file to a destination folder |
|
Rename file |
mv oldname newname |
Note: same command as “move”. |
|
Delete file |
rm filename |
Remove (delete) a file. There is no undo. |
