Difficulty: Easy
Correct Answer: 1, 3, 4
Explanation:
Introduction / Context:This item checks your grasp of the logical OR operator (||) in C#, particularly short-circuiting behavior and the exact condition under which the if body executes. Distinguishing which operand is evaluated in each scenario is the key.
Given Data / Assumptions:
Concept / Approach:For p || q: if p is true, q is not evaluated (short-circuit). If p is false, q is evaluated, and the whole expression is true when either operand is true. The assignment runs when the compound condition is true (i.e., at least one subcondition is true).
Step-by-Step Solution:
Statement 1: "no < 11 is evaluated only if age > 18 is False." — Correct. Statement 2: "no < 11 is evaluated if age > 18 is True." — Incorrect; short-circuit prevents it. Statement 3: "a = 25 executes if any one condition is True." — Correct. Statement 4: "|| is a short-circuiting logical operator." — Correct. Statement 5: "a = 25 executes only if both are True." — Incorrect; that is AND behavior.Verification / Alternative check:Truth table confirms that p || q is true if p or q is true, and q is skipped when p is true.
Why Other Options Are Wrong:
Common Pitfalls:Mixing up || with && or assuming both sides always evaluate.
Final Answer:1, 3, 4
float a = 0.7;, what will this program print and why?
#includefor loop in C. What does this program print?
#include
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