Difference between revisions of "Scope exercises"
From WLCS
Line 1: | Line 1: | ||
− | + | =Exercise A= | |
Fix the following buggy code: | Fix the following buggy code: | ||
Line 30: | Line 30: | ||
# Modify the combineName function so the suffix is added to full_name | # Modify the combineName function so the suffix is added to full_name | ||
− | + | =Exercise B= | |
* Create a new program | * Create a new program | ||
* Define two variables, 'x' and 'screen_width' | * Define two variables, 'x' and 'screen_width' |
Revision as of 22:06, 27 February 2011
Exercise A
Fix the following buggy code:
# obtain last name from user
def getLastName():
last_name=raw_input("What's your last name?")
# create a full name from the first and last names
def combineName():
full_name=first_name+" "+last_name
print_name()
#Print user's name
def print_name():
print "User's full name:"+full_name
first_name=raw_input("What's your first name?")
getLastName()
combineName()
- What is the scope of the following variables
- last_name
- first_name
- full_name?
- Ensure last_name is transferred from getLastName() to the default scope
- What argument needs to be passed to print_name()?
- Add a new function that asks "Are you (j)junior, (s)senior or (n) neither?", and determines the correct suffix ("Jr.", "Sr.")
- Modify the combineName function so the suffix is added to full_name
Exercise B
- Create a new program
- Define two variables, 'x' and 'screen_width'
- Set screen_width to 800
- Ask the user for a value for 'x'
- Write a function that performs screen wrapping(as in 'Robot'):
If the input is greater than screen width, set it to 0 If the input is less than 0 then set it to the screen width
- Add code to print 'x' before and after the function is called
- Test the code with several sample values - make sure it works.
- Extend the wrapping function so that it also works with the y-coordinate
- Don't create a second function. Instead work out how to return two variables.