Exam 2 Grading Guidelines

These are the grading guidelines that were used to grade the second exam.

Page 2

Question 1

• -1 for each wrong answer

Question 2

• -1 if “int” is missing for the temp variable
• -1 if “int” is added for firstPlaceScore and secondPlaceScore
• -4 if did not assign the values properly
• -1 if additional code that changes the logic e.g. doing the swap in an if statement

Question 3

• -1 if used a statement instead of an expression
• -1 if didn’t cast
• -1 if the division is wrong
• -1 if used “int” instead of “double”

Page 3

Question 4

• -1 if used a class
• For each question:
  • -1 if partially correct
  • -2 if completely incorrect

Question 5

• -1 if used and “if” statement
• -1 if statement instead of expression
• -1 if used the wrong numbers for the condition

Page 4

Question 6

• -1 use of (dot) instead of *
• -2 no assignment
• -2 no multiplication operator
• -1 incorrect curly braces
• -1 = instead of ==
• -1 missing semicolon
• -1 declared but uninitialized

Question 7

• -1 per incorrect condition
• -1 per incorrect body
• -1 for a syntax error

Question 8

• -1 per incorrect case
• -1 per incorrect System.out.println()
• -1 per missing break
• -6 no switch

Page 5

Question 9

• -3 for each wrong output (A,C,A) if they only have one output
• -2 if they have 2 outputs for a single part (and one of the s is correct)

Page 6

Question 10

• -2 if they don’t have k=0;
• -2 if they don’t have while(k<97) or if the loop condition is wrong
• -2 if they don’t have System.out.print(“*”);
• -2 if they don’t have k++;
• -1 for each semicolon missed
• -1 if they have println instead of print
• -1 if they put “int k”
• -1 minor syntax errors (e.g. missing curly brace)

Question 11

• -1 if they have n>= 0 instead of >
• -2 if they don’t have n--; or some proper update statement
• -2 if the test condition is entirely incorrect
• -2 if they don’t have System.out.print(“*”);
• -1 for each semicolon missed
• -1 for println instead of print
• -2 for extraneous variables

Page 7

Question 12

• -1 for one or two wrong or missing (or mostly right with minor errors)
• -2 for three or four wrong or missing
• -3 for five wrong or missing
• -4 for six wrong or missing
• etc.

Question 13

• -1 for incorrect declaration line
• -1 for missing private (take off once)
• -1 for each missing type
• -1 for each incorrect/missing initialization
• -1 for including main method
• -1 for syntax errors

Question 14

• -1 for each missing/incorrect parameter
• -1 for variable improperly set variable within body (calling mutators is OK)
• -1 for syntax errors

Page 8

Question 15

• “Input” worth 5 points
  • 2 for Scanner initialization
  • 1 for prompting
  • 2 for reading into a variable
• “Loops” worth 10 points
  • 3 per for loop (plus an extra point for 2 or 3 exceptionally bad loops)
    • 1 for counter variable initialization/ loop format
    • 1 for conditional statement
    • 1 for incrementing variables
• “Conditional Printing” worth 5 points
  • 3 for if statement
  • 2 for print statement
• “Other Necessities” worth 5 points
  • 1 for import statement
  • 2 for class
  • 2 for main
• Tabbing/syntax @ -1 per type of error if unrelated to above points