D. Do this online reading: <a href="http://www.rose-hulman.edu/class/csse/csse120/201630/Sessions/Session03/03b-Counted%20Loops/Handouts/CountedLoops.pdf" target=newtab><b>Counted Loops</b></a>
<a href="http://www.rose-hulman.edu/class/csse/csse120/VideoFiles/01.5d-YourFirstProgram-Functions/YourFirstProgram-Functions.mp4" target=newtab><b>Your First Programs, Part 4: Functions</b></a>, doing the next set of questions while you do so.
1. Choose the correct lines to make a loop that prints 'funny' 40,000 times.
M. Line 1->for k in range(40000):
M. Line 2-> print('funny')
M. ->for k in range(40001)
M. ->for k in range(n)
M. -> return 'funny'
M. -> print 'funny'
30. Choose the correct lines to make a loop that prints the cubes of the numbers from 0 to <b>m</b>, inclusive (where <b>m</b> is some integer bigger than 35). For example, if <b>m</b> were 37, then this loop should print: <p>42875</p><p>46656</p><p>50653</p> These are 35 cubed, 36 cubed, and 37 cubed.
M. Line 1->for i in range(m+1)
M. ->for i in range(m)
M. ->for i in range(0)
M. Line 2-> print(i**3)
M. -> print(35**3)
M. -> print(m**3)
D. Watch <a href="https://www.rose-hulman.edu/class/csse/csse120/VideoFiles/04.2-TheAccumulatorPattern-Part1-Summing/TheAccumulatorPattern-Summing.mp4">Video: The Accumulator Pattern - Summing</a>
D. Watch the video: <a href="http://www.rose-hulman.edu/class/csse/csse120/VideoFiles/01.5d-YourFirstProgram-Functions/YourFirstProgram-Functions.mp4" target=newtab><b>Your First Programs, Part 4: Functions</b></a>, doing the next set of questions while you do so.
11. Trace the snippet of code shown to below by hand (no fair typing it into a program), and show what gets printed: <pre><br>total = 0<br>for k in range(5):<br> total = total + (k + 10)<br> print(k, total)<br><br>print('The sum 10 + 11 + 12 + 13 + 14 is')<br>print(total)</pre>
M. Line 1 -> 0 10
M. Line 2 -> 1 21
M. Line 3 -> 2 33
M. Line 4 -> 3 46
M. Line 5 -> 4 60
M. Line 6 -> The sum 10 + 11 + 12 + 13 + 14 is
M. Line 7 -> 60
M. -> 0 10
M. -> 1 11
M. -> 2 12
M. -> 3 13
M. -> 4 14
M. -> 5 15
M. -> 75
12. Write a snippet of code that calculates: <div><pre>math.sin(3)+math.sin(4)+math.sin(5)+...+math.sin(500)</pre></div> Assume that there is already an import math that executed previously in the code.
M. Line 1 -> total = 0
M. Line 2 -> for k in range(408):
M. Line 3 -> total = total + math.sin(k+3)
M. -> for k in range(500):
M. -> for k in range(3):
M. -> total = 500
M. -> total = math.sin(k+3)
M. -> total = math.sin(k+3)
D. Online Reading: <a href="https://www.rose-hulman.edu/class/csse/csse120/201630/Sessions/Session04/04b-FunctionsWithParameters/Handouts/FunctionsWithParameters.pdf">Functions with Parameters and Returned Values.</a><br>Textbook Reading: Section 5.3 - Parameter Passing (pages 226 - 228)
D. Watch the video: <a href="http://www.rose-hulman.edu/class/csse/csse120/VideoFiles/01.5d-YourFirstProgram-Functions/YourFirstProgram-Functions.mp4" target=newtab><b>Your First Programs, Part 4: Functions</b></a>, doing the next set of questions while you do so.
13. Consider the function call <pre>round(3.14159, 2)</pre>, which rounds 3.14159 to 2 decimal places. What are the <b>arguments?</b>
a. 3.14159 and 2~
b. 3.14159
c. 2
d. 3.14
e. round
14. Consider the function call <pre>round(3.14159, 2)</pre>, which rounds 3.14159 to 2 decimal places. What is the <b>return value?</b>
a. 3.14159 and 2
b. 3.14159
c. 2
d. 3.14~
e. round
15. As a user of a function (that is, as someone who will call the function), you don't need to know how the function is implemented; you just need to know the specification of the function.
a. True~
b. False
D. Consider the cubeVolume function defined below. <pre>def cubeVolume(sideLength):<br> volume = sideLength ** 3<br> return volume<br></pre>
16. What is the value of cubeVolume(3)?
a. 9
b. 27~
c. 81
d. 256
e. 512
17. What is the value of cubeVolume(cubeVolume(2))?
a. 9
b. 27
c. 81
d. 256
e. 512~
18. Provide an alternate implementation of the body of the cubeVolume that does not use the exponent operator.
M. Line 1 -> volume = sideLength * sideLength * sideLength
M. Line 2 -> return volume
M. -> volume = sideLength * 3
M. -> volume = sideLength ^ 3
D. Consider the mystery function defined below. <pre>def mystery(x, y):<br> result = (x + y) / (y - x)<br> return result<br></pre>
19. What is the value of mystery(2,3)?
ANS. 5
20. What is the value of mystery(3,2)?
ANS. -5
D. Online Reading: <a href="http://www.rose-hulman.edu/class/csse/csse120/VideoFiles/04.6-VariableScope-Handout/NamespacesAndVariablesScope.pdf" target=newtab> Namespaces and Variables' Scope</a>.
21. What gets printed when main is called in the program shown below? (Pay close attention to the order in which the statements are executed.) <pre>def main():<br> hello()<br> goodbye()<br> hello_and_goodbye()<br> goodbye()<br> <br>def hello():<br> print('Hello!')<br> return 'Hello!'<br> print('Hello Again!')<br> <br>def goodbye():<br> print('Ciao!')<br> <br>def hello_and_goodbye():<br> print('Here is stuff!')<br> goodbye()<br> hello()<br> hello()<br> print('Here is more!')<br> hello()<br> goodbye()<br></pre>
M. Line 1 -> Hello!
M. Line 2 -> Ciao!
M. Line 3 -> Here is stuff!
M. Line 4 -> Ciao!
M. Line 5 -> Hello!
M. Line 6 -> Hello!
M. Line 7 -> Here is more!
M. Line 8 -> Hello!
M. Line 9 -> Ciao!
M. Line 10 -> Ciao!
M. -> Hello Again!
M. -> Hello Again!
22. What gets printed when main is called in the program shown below?<pre><br>def main():<br> a = 4<br> answer = mystery(a + 1)<br> print(answer)<br><br>def mystery(x):<br> y = x * x<br> return y<br></pre>
ANS. 25
23. What gets printed when main is called in the program shown below?<pre><br>def main():<br> big()<br> bigger()<br> biggest()<br> big()<br><br>def big():<br> print('basketball')<br><br>def bigger():<br> print('truck')<br> big()<br><br>def biggest():<br> print('house')<br> bigger()<br> big()<br></pre>
M. Line 1 -> basketball
M. Line 2 -> truck
M. Line 3 -> basketball
M. Line 4 -> house
M. Line 5 -> truck
M. Line 6 -> basketball
M. Line 7 -> basketball
M. Line 8 -> basketball
24. What gets printed when main is called in the program shown below?<pre>def main():<br> a = 4<br> print(mystery(a + 1))<br> <br>def mystery(x):<br> return x * x<br></pre>
ANS. 25
25. Consider the totalCents function shown below. This function correctly calculates and returns the number of cents that is equivalent to a given number of dollars and cents.<pre><br>def totalCents(dollars, cents):<br> cents = (dollars * 100) + cents<br> return cents<br></pre> For example, totalCents(3, 71) correctly returns 371. However, this function violates a style rule: Do Not Modify Parameter Values (in a function's body). This style rule is a good rule because modifying parameter values:
a. Yields ugly code.
b. Is an error-prone practice.~
c. Causes the sky to fall.
d. Makes Pointy-Headed Managers unhappy.
26. Show how one could write totalCents without violating the Do Not Modify Parameter Values rule.
M. Line 1 -> change = (dollars * 100) + cents
M. Line 2 -> return change
M. -> dollars = (dollars * 100) + cents
M. -> cents = (dollars * 100) + cents
M. -> return dollars
M. -> return cents
D. The boxString function takes a string as its argument and displays that string "in a box":<pre><br>def boxString(contents):<br> n = len(contents)<br> print('-' * (n + 2))<br> print('!' + contents + '!')<br> print('-' * (n + 2))<br></pre> Calling boxString with 'Hello Moon' as its argument yields the following: <pre>------------<br/>!Hello Moon!<br/>------------</pre>
27. Consider the following (silly!) statement: <pre>print(boxString('Hello'))</pre> What, exactly, does the above statement cause to appear on the Console?
M. Line 1 -> -------
M. Line 2 -> !Hello!
M. Line 3 -> -------
M. Line 4 -> None
M. -> !Hello Moon!
M. -> ------------
M. -> ------------
M. -> (nothing appears on this line)
28. How <b>should</b> the above statement been written, to be sensible?
a. boxString('Hello')~
a. print(boxString('Hello'))
b. print(boxString('Hello')) - None
c. print(boxString('Hello') - None)
d. boxString('!Hello!')
29. Write statements that would use boxString to produce on the Console the output shown below.<pre><br/>-------<br/>!Hello!<br/>-------<br/>------<br/>!Moon!<br/>------</pre>
M. Line 1 -> boxString('Hello')
M. Line 2 -> boxString('Moon')
M. -> print(boxString('Hello'))
M. -> print(boxString('Moon'))
D. For each of the following boxes: <ul><li>If the code is correct, state what gets printed when main runs.</li><li>If the code is wrong, explain why.</li></ul> For this and all subsequent problems, assume that <b>no global variables have been defined</b>.
30. <pre>def main():<br> x = foo()<br> print(x)<br><br>def foo(m):<br> return m ** 3<br></pre>
a. Correct, prints x**3
b. Correct, prints m**3
c. Incorrect because the call to foo is missing a parameter~
d. Incorrect because m is undefined
e. Incorrect because x is undefined
f. Incorrect because the value of m can't be cubed
31. <pre>def main():<br> x = foo(m)<br> print(x)<br><br>def foo(m):<br> return m ** 3<br></pre>
a. Correct, prints x**3
b. Correct, prints m**3
c. Incorrect because the call to foo is missing a parameter
d. Incorrect because m is undefined~
e. Incorrect because x is undefined
f. Incorrect because the value of m can't be cubed
32. <pre>def main():<br> x = foo('help')<br> print(x)<br><br>def foo(m):<br> return m ** 3<br></pre>
a. Correct, prints helphelphelp
a. Correct, prints m**3
c. Incorrect because the call to foo is missing a parameter
d. Incorrect because m is undefined
e. Incorrect because x is undefined
f. Incorrect because the value of m can't be cubed~
33. The code in the box below has syntax errors: it causes big red X error message(s). Check all lines that will have red X error message(s) beside them. <pre>def main():<br> foo()<br> print(n)<br> print(m)<br><br>def foo():<br> n = 3<br> m = 1<br> return m</pre>
a. def main():
b. foo()
c. print(n)~
d. print(m)~
e. def foo():
f. n = 3
g. m = 1
h. return m
34. Suppose you want to write a function called <b><i>distance</i></b> that has two rg.Point objects sent to it and returns the distance between them. What would be the best "header" line of <b><i>distance</i></b>?
a. def distance(start, end)~
b. def distance(a, b)
c. def distance(x, y)
d. def foo(a, b)
35. Suppose you want to write a function called <b><i>drawPoint</i></b> that takes a rg.Point object and a rg.RoseWindow object (in that order) and draws the point on the window. What would be the best "header" line of <b><i>drawPoint</i></b>?
a. def drawPoint(point, window)~
b. def drawPoint(p, w)
c. def drawPoint(a, b)
d. def drawPoint(x, y)
36. What gets printed when main is called in the program shown below?<pre>def main():<br> a = 2<br> b = 3<br><br> m = do_it(a, b)<br> print(m)<br><br> m = do_it(b, a)<br> print(m)<br><br> m = do_it(a, a)<br> print(m)<br><br> m = do_it(b, b)<br> print(m)<br><br> c = do_it(b, a)<br> m = do_it(c, a)<br> print(m)<br><br> b = do_it(b, a)<br> m = do_it(b, a)<br> print(m)<br><br>def do_it(x, y):<br> return x ** y</pre>
M. Line 1 -> 8
M. Line 2 -> 9
M. Line 3 -> 4
M. Line 4 -> 27
M. Line 5 -> 81
M. Line 6 -> 81
M. -> 6561
37. What gets printed when main is called in the program shown below? <pre>def main():<br> a = 2<br> b = 3<br><br> foo1()<br> print(a, b)<br><br> foo2(a, b)<br> print(a, b)<br><br> foo3(a, b)<br> print(a, b)<br><br>def foo1():<br> a = 88<br> b = 99<br><br>def foo2(a, b):<br> a = 400<br> b = 500<br><br>def foo3(x, y):<br> x = 44<br> y = 55</pre>
M. Line 1 -> 2 3
M. Line 2 -> 2 3
M. Line 3 -> 2 3
M. -> 88 99
M. -> 400 500
M. -> 44 55