f 3 9 d e a c 6 7 b. Umail umail.ucsb.edu

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1 Exam Version: Color in first initial: f 3 9 d e a c 6 7 b A B C D E F G H I J K L M N O P Q R S T U V W X Y Z section (9,10,11, 12,1,2 ) first name initial last name initial Color in first initial: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z CS8 Midterm Exam E01, S14, Phill Conrad, UC Santa Barbara Wednesday, 04/23/2014 Name: Umail umail.ucsb.edu Please write your name only on this page. That allows me to grade your exams without knowing whose exam I am grading. This exam is closed book, closed notes, closed mouth, cell phone off, except for: You are permitted one sheet of paper (max size 8.5x11") on which to write notes These sheets will be collected with the exam, and might not be returned Please write your name on your notes sheet There are 100 points worth of questions on the exam, and you have 180 minutes to complete the exam. A hint for allocating your time on your first pass through the exam: if a question is worth 10 points, spend no more than 5 minutes on it if a question is worth 20 points, spend no more than 10 minutes on it if a question is worth 40 points, spend no more than 20 minutes on it etc. Then you'll finish your first pass in 50 minutes, and have 25 minutes to proofread, or circle back to questions you didn't finish in your first pass.

2 1. Please refer to the handout for more information on this problem. The handout describes functions for drawzero, drawone, drawgreaterthan, and drawspace, and you need that information to be able to continue with the problem. Here is some incomplete code for the drawgreaterthan() function. def drawgreaterthan(t,w,h): """ draw greater than sign """ # starting point sx = t.xcor() sy = t.ycor() # middle right midrx = midry = # upperleft ulx = uly = # endpoint ex = sx + w ey = sy # draw, leaving turtle # at endpoint Your job: a. (16 pts) Fill in the incomplete assignment statements (four of them, four points each.) b. (21 pts) Fill in the code that draws the lines and leaves the turtle at the lower right corner.

3 2. (10 pts) Please refer to the handout for a description of the drawspace function. Write the entire function definition for drawspace(t,w) For full credit: Include a docstring (that thing with """that describes the function) Look at how the function is used in the call to drawonegreaterthanzero on the handout.

4 Instructions for questions 3 through 9 Questions 3 through 9 are essentially true/false, but for high stakes. The question, in each case is simple: Does the version of drawzero shown work correctly? That is: assuming the turtle starts facing right, does it: draw a zero of the correct width and height, with lower left corner at the starting point, and then leave the turtle facing right, at the lower right corner? If yes, i.e. the code is correct, answer "TRUE". If no, i.e the code is not correct, answer "FALSE". Be careful, because there is no partial credit. 3. (4 pts) Is this version of drawzero(t,w,h) correct?

5 4. (4 pts) Is this version of drawzero(t,w,h) correct? """ Draw zero as a rectangle """ t.backward(h) t.right(90) 5. (4 pts) Is this version of drawzero(t,w,h) correct? t.right(90) t.right(90) t.right(90)

6 6. (4 pts) Is this version of drawzero(t,w,h) correct? sx = t.xcor() sy = t.ycor() ex = sx + w ey = sy ulx = sx uly = sy + h urx = sx + w ury = sy + h t.goto(ulx,uly) t.goto(urx,ury) t.goto(sx,sy) 7. (4 pts) Is this version of drawzero(t,w,h) correct? for i in range(2):

7 8. (4 pts) Is this version of drawzero(t,w,h) correct? sx = t.xcor() sy = t.ycor() ex = sx + w ey = sy ulx = sx uly = sy + h urx = sx + w ury = sy + h t.goto(ulx,uly) t.goto(urx,ury) t.goto(sx,sy) 9. (4 pts) Is this version of drawzero(t,w,h) correct? sx = t.xcor() sy = t.ycor() ex = sx + w ey = sy ulx = sx uly = sy + sy urx = sx + w ury = sy + h t.goto(ulx,uly) t.goto(urx,ury) t.goto(sx,sy)

8 10. (10 pts) two points each In Python, if we assign: city="solvang"then what is the value of each of these? a. city[2:4] b. city[2] c. city[-1] d. city[1:] e. city[1] 11. Fill in the values printed by the code. If there will be no output, write "no output". NO PARTIAL CREDIT: full points for each exactly correct answer, 0 pts for any deviation, per part below. Spacing and punctuation count: don't put commas if none would be printed, and if answer is on multiple lines, write your answer on multiple lines. Don't indent unless the answer would be indented. for i in range(4): for i in range(8,5): for i in range(3,8,2): for i in range(6,9,-1): for i in range(7,3,-1):

9 End of Exam Total Points: 100

University of Connecticut Department of Mathematics

University of Connecticut Department of Mathematics Math 1131 Sample Exam 1 Fall 2013 Name: This sample exam is just a guide to prepare for the actual exam. Questions on the actual exam may or may not