Explore topic-wise MCQs in C Programming.

This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your C Programming knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following are generated from char pointer?

A. char *string = “Hello.”;
B. char *string;scanf("%s", string);
C. char string[] = “Hello.”;
D. char *string = “Hello.”; and char string[] = “Hello.”;
Answer» B. char *string;scanf("%s", string);
Discussion
2.

Which of the following is not possible statically in C?

A. Jagged Array
B. Rectangular Array
C. Cuboidal Array
D. Multidimensional Array
Answer» B. Rectangular Array
Discussion
3.

What is argv[0] in command line arguments?

A. The name by which the program was invoked
B. The name of the files which are passed to the program
C. Count of the arguments in argv[] vector
D. None of the mentioned
Answer» B. The name of the files which are passed to the program
Discussion
4.

What is the second argument in command line arguments?

A. The number of command-line arguments the program was invoked with;
B. A pointer to an array of character strings that contain the arguments, one per string
C. Nothing
D. None of the mentioned
Answer» C. Nothing
Discussion
5.

What are the applications of a multidimensional array?

A. Matrix-Multiplication
B. Minimum Spanning Tree
C. Finding connectivity between nodes
D. All of the mentioned
Answer» E.
Discussion
6.

Which of the following operation is possible using a pointer char? (Assuming the declaration is char *a;)

A. Input via %s
B. Generation of the multidimensional array
C. Changing address to point at another location
D. All of the mentioned
Answer» D. All of the mentioned
Discussion
7.

What are the different ways to initialize an array with all elements as zero?

A. int array[5] = {};
B. int array[5] = {0};
C. int a = 0, b = 0, c = 0; int array[5] = {a, b, c};
D. All of the mentioned
Answer» E.
Discussion
8.

Which of the following declaration are illegal?

A. int a[][] = {{1, 2, 3}, {2, 3, 4, 5}};
B. int *a[] = {{1, 2, 3}, {2, 3, 4, 5}};
C. int a[4][4] = {{1, 2, 3}, {2, 3, 4, 5}};
D. none of the mentioned
Answer» B. int *a[] = {{1, 2, 3}, {2, 3, 4, 5}};
Discussion
9.

What is the size of *ptr in a 32-bit machine (Assuming initialization as int *ptr = 10;)?

A. 1
B. 2
C. 4
D. 8
Answer» D. 8
Discussion
10.

Which of the following is the correct syntax to send an array as a parameter to function?

A. func(&array);
B. func(#array);
C. func(*array);
D. func(array[size]);
Answer» B. func(#array);
Discussion
11.

Which of the following is a correct syntax to pass a Function Pointer as an argument?

A. void pass(int (*fptr)(int, float, char)){}
B. void pass(*fptr(int, float, char)){}
C. void pass(int (*fptr)){}
D. void pass(*fptr){}
Answer» B. void pass(*fptr(int, float, char)){}
Discussion
12.

Which of the following is not possible in C?

A. Array of function pointer
B. Returning a function pointer
C. Comparison of function pointer
D. None of the mentioned
Answer» E.
Discussion
13.

Which of the following arithmetic operation can be applied to pointers a and b? (Assuming initialization as int *a = (int *)2; int *b = (int *)3;)

A. a + b
B. a – b
C. a * b
D. a / b
Answer» C. a * b
Discussion
14.

Comment on an array of the void data type.

A. It can store any data-type
B. It only stores element of similar data type to first element
C. It acquires the data type with the highest precision in it
D. You cannot have an array of void data type
Answer» E.
Discussion
15.

A program that has no command line arguments will have argc _________

A. Zero
B. Negative
C. One
D. Two
Answer» D. Two
Discussion
16.

What type of initialization is needed for the segment 'ptr[3] = '3';' to work?

A. char *ptr = “Hello!”;
B. char ptr[] = “Hello!”;
C. both char *ptr = “Hello!”; and char ptr[] = “Hello!”;
D. none of the mentioned
Answer» C. both char *ptr = “Hello!”; and char ptr[] = “Hello!”;
Discussion
17.

How to call a function without using the function name to send parameters?

A. typedefs
B. Function pointer
C. Both typedefs and Function pointer
D. None of the mentioned
Answer» C. Both typedefs and Function pointer
Discussion
18.

Which of the following is the correct syntax to declare a 3 dimensional array using pointers?

A. char *a[][];
B. char **a[];
C. char ***a;
D. all of the mentioned
Answer» B. char **a[];
Discussion
19.

An array of strings can be initialized by _________

A. char *a[] = {“Hello”, “World”};
B. char *a[] = {“Hello”, “Worlds”};
C. char *b = "Hello";char *c = "World";char *a[] = {b, c};
D. All of the mentioned
Answer» E.
Discussion
20.

What is the index of the last argument in command line arguments?

A. argc – 2
B. argc + 1
C. argc
D. argc – 1
Answer» E.
Discussion
21.

What is the first argument in command line arguments?

A. The number of command-line arguments the program was invoked with;
B. A pointer to an array of character strings that contain the arguments
C. Nothing
D. None of the mentioned
Answer» B. A pointer to an array of character strings that contain the arguments
Discussion
22.

Which of the following can never be sent by call-by-value?

A. Variable
B. Array
C. Structures
D. Both Array and Structures
Answer» C. Structures
Discussion
23.

An array of similar data types which themselves are a collection of dissimilar data type are ___________

A. Linked Lists
B. Trees
C. Array of Structure
D. All of the mentioned
Answer» D. All of the mentioned
Discussion
24.

What does argc and argv indicate in command-line arguments?(Assuming: int main(int argc, char *argv[]) )

A. argument count, argument variable
B. argument count, argument vector
C. argument control, argument variable
D. argument control, argument vector
Answer» C. argument control, argument variable
Discussion
25.

Which is true for b, if b is defined as “int *b[10];”?

A. The definition only allocates 10 pointers and does not initialize them
B. Initialization must be done explicitly
C. The definition only allocates 10 pointers and does not initialize them & Initialization must be done explicitly
D. Error
Answer» D. Error
Discussion
26.

How many number of pointer (*) does C have against a pointer variable declaration?

A. 7
B. 127
C. 255
D. No limits
Answer» E.
Discussion
27.

Which is true for a, if a is defined as “int a[10][20];”?

A. a is true two-dimensional array
B. 200 int-sized locations have been set aside
C. The conventional rectangular subscript calculation 20 * row + col is used to find the element a[row, col].
D. All of the mentioned
Answer» E.
Discussion
28.

Which of following logical operation can be applied to pointers? (Assuming initialization int *a = 2; int *b = 3;)

A. a | b
B. a ^ b
C. a & b
D. None of the mentioned
Answer» E.
Discussion
29.

What is the correct syntax to send a 3-dimensional array as a parameter? (Assuming declaration int a[5][4][3];)

A. func(a);
B. func(&a);c) func(*a);d) func(**a);
Answer» B. func(&a);c) func(*a);d) func(**a);
Discussion