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Subgoals

Section 2.24 Expressions-WE8-P1

Subgoals for evaluating an assignment statement.

  1. Determine resultant data type of expression
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  2. Update variable for pre operators based on side effect
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  3. Solve arithmetic equation, operator precedence
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  4. Is the Left Hand Side (LHS) of the assignment statement a variable? Check the data type of the value on right hand side (RHS) against data type of LHS variable.
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  5. Update variable for post operators based on side effect
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Subsection 2.24.1

Given
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int  x = 4, y = 6;
boolean result;
What is the value of result after each of the following?
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Exercises Exercises

1.
Q52: result = x < y;
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  • true
  • Correct
  • false
  • Incorrect
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2.
Q53: result = x + 2 < y;
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  • true
  • Incorrect
  • false
  • Correct
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3.
Q54: result = x != y;
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  • true
  • Correct
  • false
  • Incorrect
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4.
Q55: result = x + 3 >= y;
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  • true
  • Correct
  • false
  • Incorrect
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5.
Q56: result = y == x;
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  • true
  • Incorrect
  • false
  • Correct
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6.
Q57: result = y == x+2;
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  • true
  • Correct
  • false
  • Incorrect
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7.
Q58: result = 7 == 7;
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  • true
  • Correct
  • false
  • Incorrect
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8.
Q59: result = 13 < 100;
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  • true
  • Correct
  • false
  • Incorrect
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9.
Q60: result = -17.32 != -17.32;
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  • true
  • Incorrect
  • false
  • Correct
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10.
Q61: result = -3.0 == 0.0;
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  • true
  • Incorrect
  • false
  • Correct
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11.
Q62: result = 13 <= 100;
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  • true
  • Correct
  • false
  • Incorrect
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12.
Q63: result = -18 < -15;
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  • true
  • Correct
  • false
  • Incorrect
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13.
Q64: result = 4.2 > 3.7;
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  • true
  • Correct
  • false
  • Incorrect
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14.
Q65: result = 13 <= 13;
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  • true
  • Correct
  • false
  • Incorrect
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15.
Q66: result = 0.012 > 0.013;
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  • true
  • Incorrect
  • false
  • Correct
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