Week 03 Laboratory Exercises

Objectives

  • using complex if statements to control program execution
  • using while loops for repetition
  • building up combinations of loops
  • defining and using enums and structs

Activities To Be Completed

The following is a list of all the activities available to complete this week...

Worth 0.7 mark(s) in total:

  • count_up_down
  • vector_sum

Worth 0.7 mark(s) in total:

  • custom_cake
  • print_grid
  • letters_between
  • street_fighter

Worth 0.4 mark(s) in total:

  • xtreme
  • abc_grid

For your interest, but not for marks:

  • spiral
  • decimal_spiral

Problem sets are capped at 15 marks (there are 4 possible bonus marks from the three-dot exercises that can bring you up to a total of 15 if you missed out on any other marks in the one- or two-dot exercises).

Completing just the one and two-dot exercises every week can give you the full 15 marks needed in this component.

For more details, see the course outline.

Exercise
(●◌◌)
:

Count Up/Down

Write a C program count_up_down.c that reads one integer n and prints all integers from 0 to n inclusive one per line.

Note that if n is positive, we are counting up and if n is negative, we are counting down. For example:

dcc count_up_down.c -o count_up_down
./count_up_down
Enter number: 5
0
1
2
3
4
5
./count_up_down
Enter number: -3
0
-1
-2
-3

Assumptions/Restrictions/Clarifications

You may assume 0 will never be given as input.

You are not permitted to use arrays.

You do not have to do any error checking.

You do not have to check the return value from scanf.

New! You can run an automated code style checker using the following command:
1091 style count_up_down.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest count_up_down

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_count_up_down count_up_down.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(●◌◌)
:

Vector Sum

Download vector_sum.c here, or copy it to your CSE account using the following command:

cp -n /import/reed/A/dp1091/public_html/24T3/activities/vector_sum/vector_sum.c .

Complete the C program vector_sum.c which takes in two 3D vectors, each with an x, y and z integer component as input, and then calculates the sum to be printed.

Your job for this exercise is to use the values stored in first_vector and second_vector which have already been scanned in for you to calculate the sum of the vectors and store the result in the given struct vector called sum_vector.

Examples

dcc vector_sum.c -o vector_sum
./vector_sum
Please enter the values of the first vector (x, y, z): 1 2 3
Please enter the values of the second vector (x, y, z): 4 5 6
The resulting sum vector is:
x: 5
y: 7
z: 9
./vector_sum
Please enter the values of the first vector (x, y, z): 1 2 3
Please enter the values of the second vector (x, y, z): 1 2 3
The resulting sum vector is:
x: 2
y: 4
z: 6
./vector_sum
Please enter the values of the first vector (x, y, z): -5 30 -12
Please enter the values of the second vector (x, y, z): 15 -31 -30
The resulting sum vector is:
x: 10
y: -1
z: -42

Assumptions/Restrictions/Hints

  • You may assume that you will be given only integers as input.
  • You may assume that all input is valid.
New! You can run an automated code style checker using the following command:
1091 style vector_sum.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest vector_sum

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_vector_sum vector_sum.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(●●◌)
:

Custom Cake

In this activity you will create a program called custom_cake.c.

The program will first ask for the number of layers (rows) of a cake. It will then scan in an ASCII character for each layer. Finally, the program will print out a row for each layer (ASCII character), equal in width to the number of layers.

For example, if the number of layers was 3, it should print out a cake that is 3x3 characters large. If the number of layers was 5, it should print out a cake that is 5x5 characters large.

Examples

dcc custom_cake.c -o custom_cake
./custom_cake
How many layers: 5
Please enter layers: *|=~=
*****
|||||
=====
~~~~~
=====
./custom_cake
How many layers: 3
Please enter layers: =&=
===
&&&
===

Assumptions/Restrictions/Clarifications

  • The number of layers will always be a non-zero positive integer.
  • The number of characters input will always match the number of layers.
  • The width of each layer will always be the same as the total number of layers.
New! You can run an automated code style checker using the following command:
1091 style custom_cake.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest custom_cake

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_custom_cake custom_cake.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(●●◌)
:

Print a Coordinate Grid

Write a program called print_grid.c that reads an integer n from standard input and prints an n x ngrid with all the coordinates of the grid shown.

Each of the points of the grid should be printed out in the form (row, col). This is different to your typical (x,y) coordinate grid and you should see if you can figure out why this is more convenient for us!

Make your program match the examples below exactly.

dcc print_grid.c -o print_grid
./print_grid 
Enter size: 4
(0, 0) (0, 1) (0, 2) (0, 3)
(1, 0) (1, 1) (1, 2) (1, 3)
(2, 0) (2, 1) (2, 2) (2, 3)
(3, 0) (3, 1) (3, 2) (3, 3)

./print_grid 
Enter size: 5
(0, 0) (0, 1) (0, 2) (0, 3) (0, 4)
(1, 0) (1, 1) (1, 2) (1, 3) (1, 4)
(2, 0) (2, 1) (2, 2) (2, 3) (2, 4)
(3, 0) (3, 1) (3, 2) (3, 3) (3, 4)
(4, 0) (4, 1) (4, 2) (4, 3) (4, 4)

./print_grid
Enter size: 8
(0, 0) (0, 1) (0, 2) (0, 3) (0, 4) (0, 5) (0, 6) (0, 7)
(1, 0) (1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6) (1, 7)
(2, 0) (2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6) (2, 7)
(3, 0) (3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6) (3, 7)
(4, 0) (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6) (4, 7)
(5, 0) (5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6) (5, 7)
(6, 0) (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6) (6, 7)
(7, 0) (7, 1) (7, 2) (7, 3) (7, 4) (7, 5) (7, 6) (7, 7)

Assumptions/Restrictions/Clarifications

  • You may assume that your program will only scan in integers
  • Your program only has to handle sizes in the range 0 to 10 inclusive
  • Your program is not required to do any error checking
  • Your program is not permitted to use arrays.
New! You can run an automated code style checker using the following command:
1091 style print_grid.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest print_grid

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_print_grid print_grid.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(●●◌)
:

Letters Between

Design a program named letters_between.c that accepts a starting letter and target letter as input. The program should calculate the shortest path between the two given letters by either moving forwards or backwards through the alphabet. The program then prints out all the letters from the starting letter to the target letter along the shortest path.

For example, if 'c' and 'k' were entered as the starting and target letters respectivley, the program would calculate the path moving forwards through the alphabet to be cdefhijk, which takes 8 letters and the
the path moving backwards through the alphabet to be cbazyxwvutsrqponmlk, which takes 19 letters.

Hence the program will print cdefhijk as 8 letters is less than 19.

Note In the case where the number of letters are equal, the program will print the letters moving forwards through the alphabet.

Examples

dcc letters_between.c -o letters_between
./letters_between
Please enter starting letter: H
Please enter target letter: K
HIJK
./letters_between
Please enter starting letter: b
Please enter target letter: w
bazyxw
./letters_between
Please enter starting letter: Q
Please enter target letter: D
QRSTUVWXYZABCD
./letters_between
Please enter starting letter: m
Please enter target letter: m
m

Assumptions/Restrictions/Clarifications

  • The starting and target letters will either be both uppercase or both lowercase.
  • The result should be printed in the same case as the input.
  • Letters will be from the english alphabet (a,b,c ... x,y,z).
  • If the starting letter and target letter are the same the program should only print one character.
  • If the number of letters are the same moving forwards and backwards, choose forwards.
New! You can run an automated code style checker using the following command:
1091 style letters_between.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest letters_between

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_letters_between letters_between.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(●●◌)
:

Street Fighter

Copy the program street_fighter.c from the course account to your directory by typing (make sure you type the dot at the end):

cp ~dp1091/public_html/24T3/activities/street_fighter/street_fighter.c .

The program should allow the user to play a game of Street Fighter. The user should be able to customise the attack power and attack key-binding (the assignment of a key on a keyboard to a command) for each fighter.

Each round, the program should prompt each fighter to attack. It should then print out the current health of each fighter, continuing until one of the fighters has no health remaining. At this point it should print which player won the game.

A fighter who is below 50% of their maximum health deals 50% more damage.

You are provided with struct fighter which contains the following fields:

  1. int attack: The attack power of the fighter. A fighter attack power will come from the user and will be between 1 and 10.
  2. double health: The current health of the fighter. Fighter begin with a maximum health of 50.
  3. char attack_command: The key binding for the attack command.

Examples

dcc street_fighter.c -o street_fighter
./street_fighter
Welcome to Street Fighter!

Enter Fighter 1's attack power (1-10): 7
Enter an ascii character for Fighter 1's attack command: a

Enter Fighter 2's attack power (1-10): 10
Enter an ascii character for Fighter 2's attack command: b

FIGHT!

Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press b to attack: b
Fighter 2 attacks!

Fighter 1's health: 40.0
Fighter 2's health: 43.0
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press b to attack: b
Fighter 2 attacks!

Fighter 1's health: 30.0
Fighter 2's health: 36.0
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press b to attack: b
Fighter 2 attacks!

Fighter 1's health: 20.0
Fighter 2's health: 29.0
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press b to attack: b
Fighter 2 attacks!

Fighter 1's health: 5.0
Fighter 2's health: 18.5
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press b to attack: b
Fighter 2 attacks!

Fighter 1's health: -10.0
Fighter 2's health: 8.0

Fighter 2 wins!
GAME OVER
./street_fighter
Welcome to Street Fighter!

Enter Fighter 1's attack power (1-10): 10
Enter an ascii character for Fighter 1's attack command: a

Enter Fighter 2's attack power (1-10): 9
Enter an ascii character for Fighter 2's attack command: s

FIGHT!

Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press s to attack: s
Fighter 2 attacks!

Fighter 1's health: 41.0
Fighter 2's health: 40.0
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press s to attack: s
Fighter 2 attacks!

Fighter 1's health: 32.0
Fighter 2's health: 30.0
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press s to attack: s
Fighter 2 attacks!

Fighter 1's health: 18.5
Fighter 2's health: 20.0
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press s to attack: s
Fighter 2 attacks!

Fighter 1's health: 5.0
Fighter 2's health: 5.0
Fighter 1, press a to attack: a
Fighter 1 attacks!
Fighter 2, press s to attack: s
Fighter 2 attacks!

Fighter 1's health: -8.5
Fighter 2's health: -10.0

It's a draw!
GAME OVER

Assumptions/Restrictions/Clarifications

  • You may find %0.1lf useful for formatting the health of each fighter.
  • Assume you will only be given valid inputs for the attack power and attack command.
  • If during a round a fighter is brought below 50% of their maximum health, they should immediately start dealing 50% more damage to their opponent.
  • If both fighter 1 and fighter 2 health are 0 or less, and both fighters lose the game your program should print It's a draw! in place of which player won the game.
New! You can run an automated code style checker using the following command:
1091 style street_fighter.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest street_fighter

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_street_fighter street_fighter.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(●●●)
:

Draw a fancy pattern

Write a program called xtreme.c that reads an (odd) integer n from standard input, and prints an nxn a square of asterisks and dashes in the following pattern:

n: 9
*---*---*
-*-----*-
--*---*--
---*-*---
*---*---*
---*-*---
--*---*--
-*-----*-
*---*---*
n: 15
*---*-----*---*
-*---*---*---*-
--*---*-*---*--
---*---*---*---
*---*-----*---*
-*---*---*---*-
--*---*-*---*--
---*---*---*---
--*---*-*---*--
-*---*---*---*-
*---*-----*---*
---*---*---*---
--*---*-*---*--
-*---*---*---*-
*---*-----*---*
n: 25
*---*---*---*---*---*---*
-*---*---*-----*---*---*-
--*---*---*---*---*---*--
---*---*---*-*---*---*---
*---*---*---*---*---*---*
-*---*---*-----*---*---*-
--*---*---*---*---*---*--
---*---*---*-*---*---*---
*---*---*---*---*---*---*
-*---*---*-----*---*---*-
--*---*---*---*---*---*--
---*---*---*-*---*---*---
*---*---*---*---*---*---*
---*---*---*-*---*---*---
--*---*---*---*---*---*--
-*---*---*-----*---*---*-
*---*---*---*---*---*---*
---*---*---*-*---*---*---
--*---*---*---*---*---*--
-*---*---*-----*---*---*-
*---*---*---*---*---*---*
---*---*---*-*---*---*---
--*---*---*---*---*---*--
-*---*---*-----*---*---*-
*---*---*---*---*---*---*

For more examples of this pattern, see the example program output at the end of this question

You can assume n is odd and >= 5.

Make your program match the examples below exactly.

This exercise is designed to give you practice with while loops, if statements and some mathematical operators.

As the course has not taught arrays yet, you are not permitted to use an array in this exercise.

./xtreme
Enter size: 5
*---*
-*-*-
--*--
-*-*-
*---*
./xtreme
Enter size: 7
*-----*
-*---*-
--*-*--
---*---
--*-*--
-*---*-
*-----*
./xtreme
Enter size: 11
*---*-*---*
-*---*---*-
--*-----*--
---*---*---
*---*-*---*
-*---*---*-
*---*-*---*
---*---*---
--*-----*--
-*---*---*-
*---*-*---*
./xtreme
Enter size: 13
*---*---*---*
-*---*-*---*-
--*---*---*--
---*-----*---
*---*---*---*
-*---*-*---*-
--*---*---*--
-*---*-*---*-
*---*---*---*
---*-----*---
--*---*---*--
-*---*-*---*-
*---*---*---*
./xtreme
Enter size: 17
*---*---*---*---*
-*---*-----*---*-
--*---*---*---*--
---*---*-*---*---
*---*---*---*---*
-*---*-----*---*-
--*---*---*---*--
---*---*-*---*---
*---*---*---*---*
---*---*-*---*---
--*---*---*---*--
-*---*-----*---*-
*---*---*---*---*
---*---*-*---*---
--*---*---*---*--
-*---*-----*---*-
*---*---*---*---*

Assumptions/Restrictions/Hints

  • You may assume that you will be given only integers as input.
  • You may assume that all input is valid.
New! You can run an automated code style checker using the following command:
1091 style xtreme.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest xtreme

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_xtreme xtreme.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(●●●)
:

ABC Grid

For this activity you will create the program abc_grid.c.

The program will create a cascading pattern in the form of a grid of letters. First the program will ask the user to choose a grid size by entering the number of rows and then the number of columns. The program will then ask for a starting letter and the starting coordinates for this letter. This is where the pattern will start from.

In the example below the starting letter is Y. Lets say its starting position was [x][y] where x and y are some starting co-ordinates. The letter following Y in the alphabet is Z and hence the immediate surrounding positions ([x + 1][y], [x - 1][y], [x][y + 1], [x][y+1]) are Z. This pattern now continues from Z where the next letter is A and so on to B. This pattern will continue until the grid has been filled!

   B
  BAB
 BAZAB
BAZYZAB
 BAZAB
  BAB
   B

Examples

dcc abc_grid.c -o abc_grid
./abc_grid
How many rows: 3
How many columns: 2
Please choose starting letter: a
Please enter starting coordinates: 2 1
dc
cb
ba
./abc_grid
How many rows: 6
How many columns: 7
Please choose starting letter: W
Please enter starting coordinates: 2 3
BAZYZAB
AZYXYZA
ZYXWXYZ
AZYXYZA
BAZYZAB
CBAZABC

Assumptions/Restrictions/Clarifications

  • Starting indexing for rows and columns starts at 0 (i.e. first row = 0).
  • The ouput should be in the same case as the starting letter.
  • You will always be given a letter from the alphabet.
  • When reaching the letter 'z' it wraps around to 'a'.
  • Letter starting coordinates will always be within the given row and column range.
  • The number of rows and columns will always be integers greater than 0.
New! You can run an automated code style checker using the following command:
1091 style abc_grid.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest abc_grid

When you are finished working on this exercise, you must submit your work by running give:

give dp1091 lab03_abc_grid abc_grid.c
    

You must run give before Monday 16 September 09:00 to obtain the marks for this lab exercise. Note that this is an individual exercise, the work you submit with give must be entirely your own.

Exercise
(☠)
:

Spiral

Write a program called spiral.c that reads an integer n from standard input. and prints an nxn pattern of asterisks and dashes in the shape of a spiral.

You can assume n is odd and >= 5.

This exercise must be completed without arrays.

Make your program match the examples below exactly.

./spiral
Enter size: 5
*****
----*
***-*
*---*
*****
./spiral
Enter size: 7
*******
------*
*****-*
*---*-*
*-***-*
*-----*
*******
./spiral
Enter size: 9
*********
--------*
*******-*
*-----*-*
*-***-*-*
*-*---*-*
*-*****-*
*-------*
*********
./spiral
Enter size: 17
*****************
----------------*
***************-*
*-------------*-*
*-***********-*-*
*-*---------*-*-*
*-*-*******-*-*-*
*-*-*-----*-*-*-*
*-*-*-***-*-*-*-*
*-*-*-*---*-*-*-*
*-*-*-*****-*-*-*
*-*-*-------*-*-*
*-*-*********-*-*
*-*-----------*-*
*-*************-*
*---------------*
*****************
New! You can run an automated code style checker using the following command:
1091 style spiral.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest spiral

Extra-hard challenge: Decimal Spiral (individual - attempt if you dare)

Write a program called decimal_spiral.c that reads an integer n from standard input. and prints an nxn pattern of decimal digits and dashes in the shape of a spiral.

You can assume n is odd and >= 5.

This exercise must be done without arrays.

Make your program match the examples below exactly.

./decimal_spiral
Enter size: 5
65432
----1
210-0
3---9
45678
./decimal_spiral
Enter size: 7
0987654
------3
87654-2
9---3-1
0-012-0
1-----9
2345678
./decimal_spiral
Enter size: 9
876543210
--------9
8765432-8
9-----1-7
0-210-0-6
1-3---9-5
2-45678-4
3-------3
456789012
./decimal_spiral
Enter size: 15
654321098765432
--------------1
2109876543210-0
3-----------9-9
4-210987654-8-8
5-3-------3-7-7
6-4-87654-2-6-6
7-5-9---3-1-5-5
8-6-0-012-0-4-4
9-7-1-----9-3-3
0-8-2345678-2-2
1-9---------1-1
2-01234567890-0
3-------------9
456789012345678
New! You can run an automated code style checker using the following command:
1091 style decimal_spiral.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest decimal_spiral

Exercise — individual:
(Not For Marks) Debugging - Factorial

Copy the program debug_factorial.c from the course account to your directory by typing (make sure you type the dot at the end):

cp ~dp1091/public_html/24T3/activities/debug_factorial/debug_factorial.c .

**Note that this exercise is not marked or worth marks!**

### Debugging Tips!

Some debugging tips for you:

- dcc output - as you run into issues, dcc will point you to where the errors are. Remember that dcc gives you the line number the issue is on, and will give some sort of explanation. Make sure you read everything dcc gives you. Sometimes we get “errors carried forward”, so find your first error, fix that, then recompile.

- print statements - sometimes it can be handy to see if the flow of your code puts you in the spot you expect it to be (ie. inside the right if statement, or going through a loop the correct amount of times). A quick way you can check this is by putting print statements in your code for testing purposes, like "the value of x is %d and y is %d". This lets you check that you got against what you expected.

- DPST1091 debugging guide - https://cgi.cse.unsw.edu.au/~dp1091/23T3/resources/debugging_guide.html

### The Task

This exercise takes in a positive integer as input, calculates the factorial of that number and prints it out. Currently it has some issues - it is your job to figure them out and fix the code.

### Examples

dcc debug_factorial.c -o debug_factorial
./debug_factorial
Enter a positive integer: 3
The factorial of 3 is 6
./debug_factorial
Enter a positive integer: 7
The factorial of 7 is 5040
./debug_factorial
Enter a positive integer: 1
The factorial of 1 is 1

### Assumptions/Restrictions/Clarifications - You can assume you will not be given negative numbers

New! You can run an automated code style checker using the following command:
1091 style debug_factorial.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest debug_factorial

Exercise — individual:
(Not For Marks) Debugging - Square

Copy the program debug_square.c from the course account to your directory by typing (make sure you type the dot at the end):

cp ~dp1091/public_html/24T3/activities/debug_square/debug_square.c .

**Note that this exercise is not marked or worth marks!**

### Debugging Tips!

Some debugging tips for you:

- dcc output - as you run into issues, dcc will point you to where the errors are. Remember that dcc gives you the line number the issue is on, and will give some sort of explanation. Make sure you read everything dcc gives you. Sometimes we get “errors carried forward”, so find your first error, fix that, then recompile.

- print statements - sometimes it can be handy to see if the flow of your code puts you in the spot you expect it to be (ie. inside the right if statement, or going through a loop the correct amount of times). A quick way you can check this is by putting print statements in your code for testing purposes, like "the value of x is %d and y is %d". This lets you check that you got against what you expected.

- COMP1511 debugging guide - https://cgi.cse.unsw.edu.au/~dp1091/23T3/resources/debugging_guide.html

### The Task

This exercise takes in a positive integer 'n' as input, and prints the outline of a square of size 'n' by 'n' in asterisks ('x'). Currently it has some issues - it is your job to figure them out and fix the code.

### Examples

dcc debug_square.c -o debug_square
./debug_square
Enter the size of the pattern: 2
**
**
./debug_square
Enter the size of the pattern: 5
*****
*   *
*   *
*   *
*****
./debug_square
Enter the size of the pattern: 1
*
New! You can run an automated code style checker using the following command:
1091 style debug_square.c
    

When you think your program is working, you can use autotest to run some simple automated tests:

1091 autotest debug_square

Submission

When you are finished each exercises make sure you submit your work by running give.

You only need to do this if the exercise specifies a give command, otherwise - the exercise is not worth marks.

You can run give multiple times. Only your last submission will be marked.

Don't submit any exercises you haven't attempted.

If you are working at home, you may find it more convenient to upload your work via give's web interface.

Remember you have until Week 4 Monday 9:00am to submit your work.

You cannot obtain marks by e-mailing your code to tutors or lecturers.

You check the files you have submitted here.

Automarking will be run by the lecturer several days after the submission deadline, using test cases different to those autotest runs for you. (Hint: do your own testing as well as running autotest.)

After automarking is run by the lecturer you can view your results here. The resulting mark will also be available via give's web interface.

Lab Marks

When all components of a lab are automarked you should be able to view the the marks via give's web interface or by running this command on a CSE machine:

1091 classrun -sturec

Generative AI Permission Level

In completing this assessment, you are permitted to use standard editing and referencing functions in the software you use to complete your assessment. These functions are described below. You must not use any functions that generate or paraphrase passages of text or other media, whether based on your own work or not.

If your Convenor has concerns that your submission contains passages of AI-generated text or media, you may be asked to account for your work. If you are unable to satisfactorily demonstrate your understanding of your submission, you may be referred to UNSW Conduct & Integrity Office for investigation for academic misconduct and possible penalties.

DPST1091/CPTG1391 Specific Information

You are permitted to use the tools dcc-help to help you understand the error messages you may get when compiling the code you have written.

You are permitted to use autotest-help to help you understand why your code may not be passing the automated tests.

You are not permitted to submit code generated by automatic AI tools such as Github Copilot, ChatGPT, Google Bard in DPST1091/CPTG1391/COMP1511 for assignments. Submitting code generated by Github Copilot, ChatGPT, Google Bard and similar tools will be treated as plagiarism.

Our reasoning behind our decisions:

Systems such as Github Copilot and ChatGPT based on large language models or other generative artificial intelligence techniques, look likely to become heavily used by programmers. However, you need a good understanding of the language you are coding in and the systems involved before you can effectively use these tools. Using these tools to generate code for DPST1091/CPTG1391/COMP1511 instead of writing the code yourself will hinder your learning.