Boolean to integer via Convert in C#: what value is assigned? d = Convert.ToInt32(!(30 < 20));
Correct Answer: A value 1 will be assigned to d.
Introduction / Context:This question ensures you know how Boolean expressions work in C# and how Convert.ToInt32 maps true/false to integers.
Given Data / Assumptions:
- Expression: !(30 < 20).
- Convert.ToInt32(bool) returns 1 for true, 0 for false.
Concept / Approach:Evaluate the comparison, apply logical NOT, then convert Boolean to int using the framework conversion.
Step-by-Step Solution:
30 < 20 → false.!false → true.Convert.ToInt32(true) → 1.Verification / Alternative check:Replacing Convert.ToInt32 with a conditional operator yields the same: int d = (!(30 < 20)) ? 1 : 0;
Why Other Options Are Wrong:They contradict the true/false to 1/0 mapping or suggest syntax from other languages (Not is not C#).
Common Pitfalls:Assuming C-style implicit Boolean-to-integer conversions; C# requires explicit conversions (here via Convert).
Final Answer:A value 1 will be assigned to d.