C# Functions and Subroutines Questions with Answers | Page 2

C# Functions and Subroutines questions with answers provide a strong foundation in modular programming. These programming questions and answers with explanations help learners differentiate between functions, subroutines, and methods, focusing on parameter passing, return types, and scope rules. Practicing C# programming MCQ or programming interview questions with answers improves coding confidence and interview readiness. Companies like IBM, Infosys, and TCS often include C# function-based problems in their placement tests. Regular practice ensures a clear understanding of reusable code structures, a key skill in professional C# development.

Showing 10 of 29 questions

Per page:

Q11

A function can be used in an expression, whereas a subroutine cannot be.

A TRUE
B FALSE

Answer: Option A

Q12

What is the primary purpose of a method in C#?

A To store data
B To organize code into reusable blocks
C To create variables
D To define classes

Answer: Option B

Explanation: Methods help organize code into reusable blocks and reduce redundancy.

Q13

Which keyword is used to define a method that does not return any value?

A null
B void
C empty
D none

Answer: Option B

Explanation: void keyword indicates no return value.

Q14

What is the correct syntax for defining a method in C#?

A method Name() {}
B returnType methodName() {}
C def methodName() {}
D function methodName() {}

Answer: Option B

Explanation: Method syntax requires return type, name, and parentheses for parameters.

Q15

Which of the following is true about method parameters?

A They are defined outside the method
B They act as variables that receive values
C They are always optional
D They cannot be used in the method body

Answer: Option B

Explanation: Parameters act as variables that receive values passed to the method.

Q16

What is method overloading in C#?

A Creating methods with different names
B Creating multiple methods with same name but different parameters
C Creating methods that override base class methods
D Creating methods with different return types only

Answer: Option B

Explanation: Overloading allows multiple methods with same name but different parameters.

Q17

Which keyword is used to call a method from another method?

A call
B invoke
C execute
D Simply use method name with parentheses

Answer: Option D

Explanation: Methods are called by using their name followed by parentheses.

Q18

What is the return type of a method that returns an integer value?

A void
B string
C int
D double

Answer: Option C

Explanation: int is the return type for integer values.

Q19

Which of the following is NOT a valid access modifier for methods?

A public
B private
C method
D protected

Answer: Option C

Explanation: public, private, and protected are valid access modifiers.

Q20

What is the purpose of the return statement in a method?

A To start the method
B To send a value back to the caller
C To create a loop
D To define variables

Answer: Option B

Explanation: return statement sends a value back to the caller and exits the method.

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