Computer Functions in “C” Test Online

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Question 1

1. Which of the following is correct about recursion?

Answer

Recursion needs goto

Answer

Recursion cannot be used in C

Answer

Recursion is only allowed once

Answer

Every recursive function must have a condition to stop

Question 2

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

Question 3

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

Answer

Only in main()

Answer

Only in C++

Question 4

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

Answer

Function-level

Answer

File-level

Question 5

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

Question 6

6. What is function overloading?

Answer

Multiple functions with same name but different parameters

Answer

Not supported in C

Answer

Function with multiple return types

Answer

Functions with same name and parameters

Question 7

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

Question 8

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

Answer

No keyword is required

Question 9

9. What is a function prototype?

Answer

A function call

Answer

A declaration of a function before its use

Answer

None of these

Answer

A function definition

Question 10

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

Answer

function sum(int, int);

Answer

int sum(int, int);

Answer

def sum(int, int);

Answer

sum(int, int);

Question 11

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

Question 12

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

Answer

call display;

Answer

display();

Answer

call display();

Question 13

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

Question 14

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

Question 15

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

Answer

No special keyword needed

Question 16

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

Answer

They help in modular programming

Answer

They reduce code duplication

Answer

They can return more than one value directly

Answer

They improve code readability

Question 17

17. What does the void return type signify?

Answer

Returns a number

Answer

Returns zero

Answer

Returns nothing

Answer

Returns a pointer

Question 18

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

Question 19

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

Question 20

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

Answer

Pointer passing

Answer

Default parameter passing

Answer

Pass by address

Answer

Reference passing

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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