Functions in C - Worksheet

What is a function in C?

• A variable that stores data

• A block of code that performs a specific task

• A loop that repeats code

• A comment in the program

Which keyword is used to define a function in C?

• define

• function

• void

• No special keyword is needed

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

• To print output

• To exit the program

• To send a value back to the caller

• To define a variable

Which of the following is a correct function declaration in C?

• function add(int a, int b)

• int add(int a, int b)

• add(int a, int b)

• int add(a, b)

What is the default return type of a function in C if not specified?

• void

• float

• int

• char

Which of the following is used to pass arguments to a function in C?

• return

• main()

• Function parameters

What does the void keyword indicate in a function declaration?

• The function returns a value

• The function has no name

• The function does not return any value

• The function has no parameters

Which of the following is true about the main() function in C?

• It is optional

• It must be the last function in the file

• It is the entry point of a C program

• It cannot call other functions

What is the correct way to call a function named sum that takes two integers?

• sum a, b;

• call sum(a, b);

• sum(a, b);

• int sum(a, b);

Which of the following is NOT a valid return type for a function in C?

• int

• float

• array

• char