Week 01 Laboratory Exercises

Your program should stop only at the end of input.

no_vowels.c must only use:
scanf(3) to read one character at a time from stdin.
printf(3) to print one character at a time to stdout.

Once you have no_vowels.c working correctly it should behave as follows:

./no_vowels
Hello, World!
Hll, Wrld!

echo "Peter Piper picked a peck of pickled peppers." > input
./no_vowels < input
Ptr Ppr pckd  pck f pckld ppprs.
./no_vowels
Andrew is the LiC of COMP1521
ndrw s th LC f CMP1521
Are you saying 'Boo' or 'Boo-Urns'?
r y syng 'B' r 'B-rns'?
In this house, we obey the laws of thermodynamics!
n ths hs, w by th lws f thrmdynmcs!

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

1092 autotest no_vowels 

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

give dp1092 lab01_no_vowels no_vowels.c

You must run give before Tuesday 03 September 09:00 (2024-09-03 09:00:00) 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.

Your program should stop only at the end of input.

Add code to no_uppercase.c so that, given text on stdin, any uppercase letters are printed as lowercase to stdout.

no_uppercase.c must only use:
getchar(3) to read one character at a time from stdin.
putchar(3) to print one character at a time to stdout.

Once you have no_uppercase.c working correctly it should behave as follows:

./no_uppercase
ABC
abc
ABCabc123
abcabc123
123!@#
123!@#
Hello, World!
hello, world!
Andrew is the LiC of COMP1521
andrew is the lic of comp1521

echo "Peter Piper picked a peck of pickled peppers." > input
./no_uppercase < input
peter piper picked a peck of pickled peppers.

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

1092 autotest no_uppercase 

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

give dp1092 lab01_no_uppercase no_uppercase.c

You must run give before Tuesday 03 September 09:00 (2024-09-03 09:00:00) 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.

Add code to no_odd_lines.c so that, given text on stdin, only print lines with an even number of characters to stdout.

no_odd_lines.c must only use:
fgets(3) to read one line at a time from stdin.
fputs(3) to print one line at a time to stdout.

Once you have no_odd_lines.c working correctly it should behave as follows:

./no_odd_lines
Hello, World
Hello, World!
Hello, World!
Sri is the LiC of COMP1521
Sri is the LiC of COMP1521, and Jashank is the admin.
Sri is the LiC of COMP1521, and Jashank is the admin.

echo "Peter Piper picked a peck of pickled peppers." > input
echo "A peck of pickled peppers Peter Piper picked." >> input
echo "If Peter Piper picked a peck of pickled peppers," >> input
echo "Where's the peck of pickled peppers Peter Piper picked?" >> input
./no_odd_lines < input
Peter Piper picked a peck of pickled peppers.
A peck of pickled peppers Peter Piper picked.
Where's the peck of pickled peppers Peter Piper picked?

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

1092 autotest no_odd_lines 

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

give dp1092 lab01_no_odd_lines no_odd_lines.c

You must run give before Tuesday 03 September 09:00 (2024-09-03 09:00:00) 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.

Add code to my_args.c so that, given 0 or more command line arguments, the command line arguments are "pretty printed".

Once you have my_args.c working correctly it should behave as follows:

./my_args
Program name: ./my_args
There are no other arguments
../lab01/my_args
Program name: ../lab01/my_args
There are no other arguments
./my_args hello world
Program name: ./my_args
There are 2 arguments:
	Argument 1 is "hello"
	Argument 2 is "world"
./my_args "hello world" 1 2 3 4 5
Program name: ./my_args
There are 6 arguments:
	Argument 1 is "hello world"
	Argument 2 is "1"
	Argument 3 is "2"
	Argument 4 is "3"
	Argument 5 is "4"
	Argument 6 is "5"

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

1092 autotest my_args 

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

give dp1092 lab01_my_args my_args.c

You must run give before Tuesday 03 September 09:00 (2024-09-03 09:00:00) 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.

Add code to arg_stats.c so that, given 1 or more command line arguments, it prints the minimum and maximum values, the sum and product of all the values, and the mean of all the values.

Once you have arg_stats.c working correctly it should behave as follows:

./arg_stats
Usage: ./arg_stats NUMBER [NUMBER ...]
./arg_stats 1
MIN:  1
MAX:  1
SUM:  1
PROD: 1
MEAN: 1
./arg_stats 1 2 3 4 5 6 7 8 9
MIN:  1
MAX:  9
SUM:  45
PROD: 362880
MEAN: 5
./arg_stats 9 8 7 6 1 2 3 5 4
MIN:  1
MAX:  9
SUM:  45
PROD: 362880
MEAN: 5
./arg_stats 1 9 1 9 1 9
MIN:  1
MAX:  9
SUM:  30
PROD: 729
MEAN: 5

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

1092 autotest arg_stats 

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

give dp1092 lab01_arg_stats arg_stats.c

You must run give before Tuesday 03 September 09:00 (2024-09-03 09:00:00) 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.

Add code to collatz.c that take a single positive integer as a command-line argument and prints the collatz chain for that number.

This is how the collatz chain is calculated:

If the current number is 1, the series terminates.
If the current number is ODD, then multiply by 3 and add 1 to get the next number
If the current number is EVEN, then divide by 2 to get the next number

Once you have collatz.c working correctly it should behave as follows:

./collatz
Usage: ./collatz NUMBER
./collatz 1
1
./collatz 12
12
6
3
10
5
16
8
4
2
1
./collatz 10
10
5
16
8
4
2
1

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

1092 autotest collatz 

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

give dp1092 lab01_collatz collatz.c

You must run give before Tuesday 03 September 09:00 (2024-09-03 09:00:00) 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.

Add code to fibonacci.c so that, given a line of input containing a natural number the corresponding Fibonacci number is printed.

This is how you obtain your Fibonacci number:

Starting with 0 and 1:
Add the preceding two Fibonacci numbers together to get the current Fibonacci number:

Once you have fibonacci.c working correctly it should behave as follows - note that bolded lines represent sample user input to the program, and the other lines represent the expected output. That is, an input of 2 prints 1, because 1 is the second Fibonacci number, and an input of 9 prints 34, because 34 is the ninth Fibonacci number.

./fibonacci
0
0
1
1
2
1
5
5
9
34

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

1092 autotest fibonacci 

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

give dp1092 lab01_fibonacci fibonacci.c

You must run give before Tuesday 03 September 09:00 (2024-09-03 09:00:00) 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.