Section 1.24 Expressions-WE8-P1
Subsection 1.24.1 Subgoals for evaluating an assignment statement
Determine resultant data type of expression
Update variable for pre-increment or pre-decrement operators (side effect)
Evaluate arithmetic expression according to operator precedence
If an assignment statement (=), is Left Hand Side (LHS) a variable? Check data type of value against data type of variable.
Update variable for post-increment or post-decrement operators (side effect)
For the assignment statements below, give the new value of the assigned variable. Each problem is independent of the others (e.g. Question 2 does not depend on Question 1, only the “Given” code).
Subsection 1.24.2 Expressions-WE8-P1
Given
int x = 4, y = 6;
boolean result;
What is the value of result after each of the following?
Exercises Exercises
1.
true
false
Q52: result = x < y;
2.
true
false
Q53: result = x + 2 < y;
3.
true
false
Q54: result = x != y;
4.
true
false
Q55: result = x + 3 >= y;
5.
true
false
Q56: result = y == x;
6.
true
false
Q57: result = y == x+2;
7.
true
false
Q58: result = 7 == 7;
8.
true
false
Q59: result = 13 < 100;
9.
true
false
Q60: result = -17.32 != -17.32;
10.
true
false
Q61: result = -3.0 == 0.0;
11.
true
false
Q62: result = 13 <= 100;
12.
true
false
Q63: result = -18 < -15;
13.
true
false
Q64: result = 4.2 > 3.7;
14.
true
false
Q65: result = 13 <= 13;
15.
true
false
Q66: result = 0.012 > 0.013;