Computer Functions in “C” Test Online

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Question 1

1. What is a function prototype?

Answer

None of these

Answer

A function definition

Answer

A declaration of a function before its use

Answer

A function call

Question 2

2. What is the return type of main() usually?

Question 3

3. Which of the following is used to return a value from a function?

Question 4

4. Can we use the same function name for different return types?

Answer

Only in C++

Answer

Only in main()

Question 5

5. What is the scope of a function declared as static?

Answer

Function-level

Answer

File-level

Question 6

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

Question 7

7. Which keyword is used to declare a function that can call itself?

Answer

No special keyword needed

Question 8

8. Which of the following is a valid function declaration in C?

Answer

int sum(int, int);

Answer

sum(int, int);

Answer

function sum(int, int);

Answer

def sum(int, int);

Question 9

9. Which of the following is not true about functions?

Answer

They reduce code duplication

Answer

They improve code readability

Answer

They help in modular programming

Answer

They can return more than one value directly

Question 10

10. Which of the following functions is used to terminate a program?

Question 11

11. Which header file is needed for exit()?

Question 12

12. How many values can a function return in C?

Question 13

13. Which of the following passes arguments by value in C?

Answer

Reference passing

Answer

Pass by address

Answer

Default parameter passing

Answer

Pointer passing

Question 14

14. Which of the following is not a valid return type of a function?

Question 15

15. What does the void return type signify?

Answer

Returns zero

Answer

Returns a number

Answer

Returns a pointer

Answer

Returns nothing

Question 16

16. Which function is always present in every C program?

Question 17

17. Which keyword is used to define a function in C?

Answer

No keyword is required

Question 18

18. What is function overloading?

Answer

Not supported in C

Answer

Multiple functions with same name but different parameters

Answer

Function with multiple return types

Answer

Functions with same name and parameters

Question 19

19. What is the correct syntax to call a function named display?

Answer

call display;

Answer

display();

Answer

call display();

Question 20

20. Which of the following is correct about recursion?

Answer

Recursion cannot be used in C

Answer

Every recursive function must have a condition to stop

Answer

Recursion is only allowed once

Answer

Recursion needs goto

Question 21

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Total Questions:	20
Time Allowed:	20 Minutes
Total Marks:	20
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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