Where does Ref appear?

Where does Ref appear?

• A. At the end of the line
• B. Start with a lower case letter in front of every reference, even if just one
• C. In parentheses after the reference
• D. In uppercase letters

Answer: (B)

The thing being tested is how the language indicates a parameter passed by reference. In languages like C#, the keyword that signals pass-by-reference is written in lowercase and is placed directly before the parameter name in the method’s declaration and again in the corresponding call. This lowercase keyword shows up right in front of the parameter, not at the end of a line, not inside parentheses after the reference, and not in uppercase. For example, a method that increments a value by reference would be declared as void Increment(ref int count) { count++; }, and when calling it you’d use Increment(ref myCount); The key idea is that the ref keyword always appears before the parameter to mark it as a reference, and it’s written in lowercase.

The thing being tested is how the language indicates a parameter passed by reference. In languages like C#, the keyword that signals pass-by-reference is written in lowercase and is placed directly before the parameter name in the method’s declaration and again in the corresponding call. This lowercase keyword shows up right in front of the parameter, not at the end of a line, not inside parentheses after the reference, and not in uppercase.

For example, a method that increments a value by reference would be declared as void Increment(ref int count) { count++; }, and when calling it you’d use Increment(ref myCount); The key idea is that the ref keyword always appears before the parameter to mark it as a reference, and it’s written in lowercase.