Fall 08, Sherri Goings, Exam #1 (10/2), form 1 B

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1 Fall 08, Sherri Goings, Exam #1 (10/2), form 1 B Last name (printed): First name (printed): Directions: a) DO NOT OPEN YOUR EXAM BOOKLET UNTIL YOU HAVE BEEN TOLD TO BEGIN. b) You have 80 minutes to complete the exam (12:40-2:00) c) This exam booklet contains 26 multiple choice questions, each weighted equally (5 points) and one 20 point write some code question. Nine pages total d) You may use one 8.5" x 11" note sheet during the exam. No other reference materials or calculating devices may be used during the examination. e) Questions will not be interpreted during the examination. f) You should choose the single best alternative for each question, even if you believe that a question is ambiguous or contains a typographic error. g) Please fill in the requested information at the top of this exam booklet. h) Use a #2 pencil to encode any information on the OMR form. i) Please encode the following on the OMR form: Last name and first initial MSU PID Exam form (see the title of this page) j) Please sign the OMR form. k) Only answers recorded on your OMR form will be counted for credit. l) Completely erase any responses on the OMR form that you wish to delete. m) You must turn in this exam booklet and the OMR form when you have completed the exam. When leaving, please be courteous to those still taking the exam. Good luck. Timing tip. A rate of 2.5 minute per multiple choice problem leaves 15 minutes to write the 20 point program at the end

2 Figure 1 1) Given user input of 5.8, what value is output by Line 2 in Figure 1? a) 0 b) 1 c) 2 d) Nothing, a python error is generated. 2) Given user input of 5.8, what value is output by Line 3 in Figure 1? a) 5 b) 5.8 c) 15 d) Nothing, a python error is generated 3) Given user input of aa, what value is output by Line 2 in Figure 1? a) 0 b) 1 c) 2 d) Nothing, a python error is generated. 4) What type is referenced by the variable count on Line 1 of Figure 1? a) float b) string c) int d) bool.

3 5) Given user input of 9, what value is output by Line 3 in Figure 1? a) 7 b) 17 c) 10 d) 18. 6) What is the value of x given the statement: x = 3>5 or (not [] and abc ) a) [] b) abc c) False d) True 7) Which of the following pieces of code is correct (will not cause an error) a) x= abc x.append( d ) b) x=(1,4,2,3) x.sort() c) x=[1] x += 5 d) x=[1,2,3] x.extend([4]) e) none of the above Figure 1a 8) What is the type of Result in Figure 1a? a) float b) int c) Depends on the input d) Cannot determine from information given.

4 Figure 1b 9) What is printed on lines 1 and 2 in Figure 1b? a) Line 1 prints [ s ], line 2 prints [ s] b) Line 1 prints None, line 2 prints [ s ] c) Line 1 prints [], line 2 prints None d) Line 1 prints [ s ], line 2 prints None 10) Which of the following is true about namespaces? a) A function can access the namespace of the main program b) The main program can access the namespace of a function c) All code inside one file shares the same namespace d) All of the above 11) What is a benefit of functions? a) They allow us to change immutable objects into mutable objects b) They allow us to define our own data types c) They allow us to write a complicated piece of code once and then reuse it whenever needed. d) All of the above

5 Figure 2 12) What output is produced by Line1 in Figure 2? a) 1 b) 111 c) a d) ) What output is produced by Line2 in Figure 2? a) aaa b) 3a c) a d) ) What output is produced by Line3 in Figure 2? a) 7.5 b) 2.5 c) a d) ) What output is produced by Line4 in Figure 2? a) 2.5 b) 7.5 c) [1, a,2.5] d) a 16) Which of the following is true? a) myvar is an argument b) the function foo returns an object of type list c) the type of myvar is constant d) myvar is a local variable

6 Figure 3 17) Given the input aga what output is produced by Line 1 of Figure 3? a) ga b) ag c) [ a, g ] d) [ g, a ] 18) Given the input xyz what output is produced by Line 1 of Figure 3? a) [ x, a, y, z, a ] b) [ a, x, y, a, z ] c) [ a, x, a, y, a, z ] d) [ x, y, a, z ] 19) Given the input a**b what output is produced by Line 1 of Figure 3? a) * b) [ ] c) [, * ] d) [ * ]

7 20) Given the input a**b what output is produced by Line 2 of Figure 3? a) -1 b) 1 c) 3 d) 4 21) Which event would NOT directly cause this loop to exit a) mylist becomes empty b) check becomes False c) num becomes less than 0 d) A break statement is reached

8 Figure 4 22) Given the input 1bzz what output is produced by Line 1 of Figure 4? a) 1bzc b) 1bzc* c) 1bzcz d) Nothing, due to a python error or an infinite loop 23) Given the input 1a what output is produced by Line 1 of Figure 4? a) 1bbz* b) 1bb* c) 1bb** d) Nothing, a due to a python error or an infinite loop 24) Given the input abc what output is produced by Line 1 of Figure 4? a) abb** b) abb* c) abc** d) Nothing, due to a python error or an infinite loop 25) Given the input 0xy what output is produced by Line 1 of Figure 4? a) 1xyc* b) 10xyz c) 0xy** d) Nothing, due to a python error or an infinite loop 26) Given the input xyz what output is produced by Line 1 of Figure 4? a) xyzc b) xyzc* c) xyz** d) Nothing, due to a python error or an infinite loop

9 27) Write a small program question 20pts. Please, write on scrap paper first (below if you like), then copy your answer to the next page. Also include your name and section on the next page where asked!!! Requirements Write a program that: prompts the user for a string finds the sum of the odd digits (1,3,5,7,9) in the string, ignoring any other characters print out the initial string and the sum of the odd digits Example given the input: a1b2c3* o prints Result: the sum of the odd digits in a1b2c3* is 4 given the input: x*-y o prints Result: the sum of the odd digits in x*-y is 0

10 CSE 231, Fall 08, Sherri Goings, Exam 1B written solution Name: Section: