Programming Fundamentals

• This page contains extra challenge exercises for week 02.
• These exercises are not compulsory, nor do they provide any marks in the course.
• These exercises are intended for students that want more challenge in the course.
• You cannot submit any of these exercises, however autotests are available for them (Command included at bottom of each exercise).

Write a C program order3.c using if statements (no loops) that reads 3 integers and prints them from smallest to largest.

Examples

dcc order3.c -o order3
./order3
Enter integer: 23
Enter integer: 5
Enter integer: 27
The integers in order are: 5 23 27
./order3
Enter integer: 3
Enter integer: 6
Enter integer: 27
The integers in order are: 3 6 27
./order3
Enter integer: 9
Enter integer: 8
Enter integer: 7
The integers in order are: 7 8 9

You can assume the user supplies 3 integers. You do not have to check the return value from scanf.

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

1511 autotest order3

Write a C program order3_challenge1.c that reads 3 integers and prints them from smallest to largest.

You are only permitted to use parts of C covered in the weeks 1 and 2 lectures. This means,

• You are not permitted to use if statements
• You are not permitted to use loops (e.g. while)
• You are not permitted to use the ternary ? operator
• You are not permitted to use arrays. You are not permitted to define functions

You are not permitted to call functions other than printf and scanf. For example, you are not permitted to use functions from the math library.

You are not permitted to use printf inside expressions - you can only use printf as a statement (the way it has been used in lectures).

You are not permitted to assign variables inside expressions - you can only assign variables as a statement (the way it has been done in lectures).

For example, both of these are invalid:

You can use printf to print the value of an expression, in other words you can have an expression inside printf.

Examples

dcc order3_challenge1.c -o order3_challenge1
./order3_challenge1
Enter integer: 23
Enter integer: 5
Enter integer: 27
The integers in order are: 5 23 27
./order3_challenge1
Enter integer: 3
Enter integer: 6
Enter integer: 27
The integers in order are: 3 6 27
./order3_challenge1
Enter integer: 9
Enter integer: 8
Enter integer: 7
The integers in order are: 7 8 9

This is more puzzle than a programming exercise.

Try to invent your own solution - don't google or ask others how do it.

Autotest is available to help you test your program - but it doesn't check that your code meets the above restrictions.

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

1511 autotest order3_challenge1

Write a C program order3_challenge1.c that reads 3 integers and prints them from smallest to largest.

You are only permitted to use parts of C covered in the weeks 1 and 2 lectures. This means,

• You are not permitted to use if statements
• You are not permitted to use loops (e.g. while)
• You are not permitted to use the ternary ? operator
• You are not permitted to use arrays. You are not permitted to define functions

For this exercise you also cannot use more than 3 variables

You are not permitted to call functions other than printf and scanf. For example, you are not permitted to use functions from the math library.

You are not permitted to use printf inside expressions - you can only use printf as a statement (the way it has been used in lectures).

You are not permitted to assign variables inside expressions - you can only assign variables as a statement (the way it has been done in lectures).

For example, both of these are invalid:

(a < b) && printf("a"); // invalid

(a < b) && (a = b); // invalid

You can use printf to print the value of an expression, in other words you can have an expression inside printf.

Examples

dcc order3_challenge1.c -o order3_challenge1
./order3_challenge1
Enter integer: 23
Enter integer: 5
Enter integer: 27
The integers in order are: 5 23 27
./order3_challenge1
Enter integer: 3
Enter integer: 6
Enter integer: 27
The integers in order are: 3 6 27
./order3_challenge1
Enter integer: 9
Enter integer: 8
Enter integer: 7
The integers in order are: 7 8 9

This is more puzzle than a programming exercise.

Try to invent your own solution - don't google or ask others how do it.

Autotest is available to help you test your program - but it doesn't check that your code meets the above restrictions.

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

1511 autotest order3_challenge2

Labour Day is a public holiday that is held in NSW on the first Monday of October. Related link https://en.wikipedia.org/wiki/Labour_Day

Write a program named labour_day.c that outputs the date of Labour Day in NSW when provided a given year.

Examples

dcc labour_day.c -o labour_day
./labour_day
Enter a year: 2023
In 2023, Labour Day is October 2nd
./labour_day
Enter a year: 2031
In 2031, Labour Day is October 6th
./labour_day
Enter a year: 2016
In 2016, Labour Day is October 3rd

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

1511 autotest labour_day