Computer Science Worksheet printable pdf download

Computer Science Worksheet

Wednesday 20th Jan 2016

Work Sheet 1

Answer question 1 using pen and paper. Hand this up at the end of next Wednesday’s lecture.

Submit your other ﬁles as a series of .py ﬁles using Moodle by the beginning of next Wednesday’s

lecture.

Boot your machine in Linux and in your home directory, create a directory called CS6502. Change

into this directory, and create a second directory called Worksheet1. Create a ﬁle for each answer

in the following format - ws1_q2.py, ws1_q3.py and ws1_q4.py where q2, 3 and 4 correspond to

each of the questions below.

1. Provide a description of the execution of this code by listing the value of each variable as the

code executes. Also provide the ﬁnal output of this code.

def getNextEven(num):

"""Some comment would go here!

"""

result = -1

if num % 2 == 0:

result = num + 2

else:

result = num + 1

return result

def main():

“””Some comment would go here!

“””

testValue = 3

testValue = getNextEven(testValue)

print(testValue)

main()

2. Write a programme that declares and initialises two variables x and y; you can initialise them

directly to some value. Write a function that takes this parameters, and using a third variable

tmp, swaps x and y, and prints the variables to output. Call the function from a main function.

3. Write a programme that calls a function called convertTemp (also write this function!) from the

programmes main function. convertTemp will take todays temperature in Cork (look up met.ie)

as a parameter and will covert from Celsius to Fahrenheit and return the value. Print this value

in the main function. The formula for the conversion is C * 9/5 + 32. You can use a hard-coded

value if you wish, or you might like to experiment with the input command; if you use input,

remember it returns a string, and you will need to explicitly convert it (see Appendix II).

4. Challenge Question - can you rewrite your answer to question 2 so that this function does not

require a third variable tmp.

Computer Science Worksheet