C programming MCQ Quiz questions PDF Download

C programming Multiple Choice Questions and Answer| 30 Multiple Choice Questions in C programming |C Programming MCQ Questions & Answer

C programming Quiz PDF: Dear Candidate, In this section we have to shared about C programming MCQ with answer PDF. The C programming language is most important section and commonly asked in interviews. People read the entire questions carefully and answer it in your mind first. Determine the correct option before reading the answer choice. Then select the best option. This is the easiest way to solve C Programming multiple choice questions and answers (MCQ) questions. C Programming MCQ questions with answer/ C Programming multiple choice questions and answers/C programming mcq pdf /mcq on C programming/simple mcq on C programming are given below.

C Programming MCQ questions with answers-Highlights

Name of the Article	C Language
Number of Questions	30
Category	MCQ Type

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Read the Given Below C Programming MCQ questions with answer:

1.  What is the disadvantage of arrays in C?

1. Multiple other data structures can be implemented using arrays
2. the amount of memory to be allocated needs to be known beforehand.
3. Elements of array can be accessed in constant time
4. Elements are stored in contiguous memory blocks

Answer: the amount of memory to be allocated needs to be known beforehand.

2. How many bytes does “int = D” use?

1. 1
2. 0
3. 10
4. 2 or 4

Answer: 2 or 4

3. Directives are translated by the__________

1. Pre-processor
2. Compiler
3. Linker
4. Editor

Answer: Pre-processor

4. What feature makes C++ so powerful?

1. Reusing the old code
2. Easy implementation
3. Easy memory management
4. All of the above

Answer: All of the above

5. What is the maximum number of characters that can be held in the string variable char address line [40]?

1. 39
2. 41
3. 40
4.  38

Answer: 39

6. Which of the following SLT template class is a container adaptor class?

1. Deque
2. Vector
3. List
4. Stack

Answer: Stack

7.  If addition had higher precedence than multiplication, then the value of the expression (1 + 2 * 3 + 4 * 5) would be which of the following?

1. 27
2. 105
3. 69
4. 47

Answer: 105

Explanation: (1 + 2 * 3 + 4 * 5)

= (1 + 2) * (3 + 4) * 5

= 3 * 7 * 5

= 105

8. Each instance of a class has a different set of______

1. Attribute values
2. Class interfaces
3. Return types
4. Methods

Answer: Attribute values

9. What is the return type of the fopen() function in C?

1. An integer
2. pointer to a FILE object
3. Pointer to an integer
4. None of the above

Answer: pointer to a FILE object 

10.  How to find the length of an array in C?

1. sizeof(a)/sizeof(a[0])
2. sizeof(a)
3. sizeof(a)*sizeof(a[0])
4. None of the above

Answer: sizeof(a)/sizeof(a[0])

11. Which of the following is not a storage class specifier in C?

1. extern
2. volatile
3. typedef
4. static

Answer: volatile

12. Which of the following will occur if we call the free() function on a NULL pointer?

1. The program will execute normally
2. Compilation Error
3. Runtime error
4. undefined behavior

Answer: The program will execute normally

13. Which of the following should be used to free memory from a pointer allocated using the “new” operator?

1. free()
2. realloc()
3. delete
4. None of the above

Answer: delete

14. Which data structure is used to handle recursion in C?

1. Stack
2. Queue
3. Trees
4. Deque

Answer: Stack

15. Which of the following is not true about structs in C?

1. Functions are allowed inside structs
2. Constructors are not allowed inside structs
3. No data hiding
4. Cannot have static members in struct body

Answer: Functions are allowed inside structs

16. How is the 3rd element in an array accessed based on pointer notation?

1. *a + 3
2.  *(*a+3)
3. *(a + 3)
4. & (a+3)

Answer: *(a + 3) 

17. Which of the following function is used to open a file in C++?

1. fgets
2. fseek
3. fclose
4. fopen

Answer: fopen ()

18. Which of the following are correct file opening modes in C?

1. w
2. r
3. rb
4. All of the above

Answer: All of the above

19. What is required in each C program?

1. The program does not require any function.
2. The program must have at least one function
3. Output data
4. Input data

Answer: The program must have at least one function

20. In which of the following languages is function overloading not possible?

1. C++
2. C
3. Python
4. Java

Answer: C

21. What is the output of this statement “printf(“%d”, (a++))”?

1. Error message
2. The value of (a + 1)
3. The current value of a
4. Garbage

Answer:  The current value of a

22. Why is a macro used in place of a function?

1. It reduces code size
2. It reduces execution time
3. It increases code size
4. It increases execution time

Answer: It reduces code size

23. What is the 16-bit compiler allowable range for integer constants?

1. -3.4e38 to 3.4e38
2.  -32767 to 32768
3.  -32668 to 32667
4. -32768 to 32767

Answer: -32768 to 32767

24. What is a lint?

1. Interactive debugger
2. C compiler
3. C interpreter
4. Analyzing tool

Answer: Analyzing tool

25. If p is an integer pointer with a value 1000, then what will the value of p + 5 be?

1. 1005
2. 1020
3. 1004
4. 1010

Answer: 1020

26. How to declare a double-pointer in C?

1. int **val
2. int *val
3. int **val
4. int &val

Answer: int **val

27.  What is the size of the int data type (in bytes) in C?

1. 4
2. 8
3. 2
4. 1

Answer: 4

28. In the C language, the constant is defined _______.

1. Before main
2. Anywhere, but starting on a new line.
3. After main
4. None of the these

Answer: Anywhere, but starting on a new line

29. How are String represented in memory in C?

1. An Array of characters
2. Linked list of characters
3. The object of some class
4. Some as other primitive data types

Answer: An Array of characters

30. Which of the following is an exit controlled loop?

1. While loop
2. For loop
3. do-while loop
4. None of the above

Answer: do-while loop

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