Explore topic-wise MCQs in C# Questions & Answers Scope and Lifetime of Variables.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your C# Questions & Answers Scope and Lifetime of Variables knowledge and support exam preparation. Choose a topic below to get started.

1.

Choose effective differences between 'Boxing' and 'Unboxing'.

A. 'Boxing' is the process of converting a value type to the reference type and 'Unboxing' is the process of converting reference to value type
B. 'Boxing' is the process of converting a reference type to value type and 'Unboxing' is the process of converting value type to reference type
C. In 'Boxing' we need explicit conversion and in 'Unboxing' we need implicit conversion
D. Both 'Boxing' and 'Unboxing' we need implicit conversion
Answer» B. 'Boxing' is the process of converting a reference type to value type and 'Unboxing' is the process of converting value type to reference type
Discussion
2.

Syntax for declaration and initialization of data variable is?

A. <data type><var_name> = <Value>;
B. <data type><var_name>;
C. <var_name><data type>;
D. <var_name> = <value>;
Answer» B. <data type><var_name>;
Discussion
3.

Scope of variable is related to definition of variable as:i. Region of code within which variable value is valid and hence can be accessed.

A. nii. No, relation with region where variable is declared its value is valid in entire scope.
B. i
C. ii
D. i, ii
E. None of the mentioned
Answer» B. i
Discussion