Data Structure

Array MCQ

⛪ Computer Science and Engineering > Data Structure

In this Chapter, we are going to discuss some questions related to array. Test your knowledge of Array data structure with this comprehensive set of multiple choice questions (MCQs). Covering topics such as array creation, manipulation, and traversal, this is the perfect resource for students and professionals looking to improve their understanding of this fundamental data structure. ➲ Array MCQ - Quiz

Q 1: 1. Let A be a dimensional array declared as follows A:[1....10][1.....15] of integers. Assume that each integer takes one memory location, the array is stored in row-major order and the first element of the array is stored at location 100, what is the address of the element A[i][j]?

  • A 15i+j+84
  • B 15j+i+84
  • C 10i+j+98
  • D d. None of the above

Q 2: Faster access to non-local variables is achieved using an array of pointers to activation record called a

  • A heap
  • B activation tree
  • C display
  • D stack

Q 3: If int s[s] is a one-dimensional array of integers, which of the following refers to the third element of in the array?

  • A *(s+2)
  • B s+3
  • C *(s+3) + 5
  • D *(s+3) + 2

Q 4: How array values can be held by an array defined as A(-1.....n, 1

  • A n(n-1)
  • B n2 (n-1)
  • C n(n+1)
  • D n(n+2)

Q 5: Suppose we want to arrange n numbers stored in an array such that all negative values occur such before all positive ones. Minimum number of exchange required in the worst case

  • A n-1
  • B n
  • C n+1
  • D none of the above

Q 6: If an array is declared as arr[] = {1,3,5,7,9}; then what is the value of sizeof(arr[3]) ?

  • A 1
  • B 2
  • C 3
  • D 8

Q 7: If an array is declared as arr[] = {1,3,5,7,9}; then what is the value of arr[3] ?

  • A 1
  • B 7
  • C 9
  • D 5

Q 8: If an array is declared as double arr[50]; how many bytes will be allocated to it?

  • A 50
  • B 100
  • C 200
  • D 400

Q 9: If an array is declared as int arr[50] , how many elements can it hold?

  • A 49
  • B 50
  • C 51
  • D 0

Q 10: If an array is declared as int arr[5][5] , how many elements can it store?

  • A 5
  • B 25
  • C 10
  • D 0

Q 11: Given an integer array arr[] ; the i th element can be accessed by writing

  • A *(arr+i)
  • B *(i + arr)
  • C arr[i]
  • D All of these

Q 12: Insert("XXXYYYZZZ", 1, "PPP") =

  • A PPPXXXYYYZZZ
  • B XPPPXXYYYZZZ
  • C XXXYYYZZZPPP
  • D XXXYYYZZZPPPX

Q 13: Delete("XXXYYYZZZ", 4,3) =

  • A XXYZ
  • B XXXYYZZ
  • C XXXYZZ
  • D XXXYZZX

Q 14: If str[] = "Welcome to the world of programming" , then SUBSTRING(str, 15, 5) =

  • A world
  • B programming
  • C welcome
  • D none of these

Q 15: strcat() is defined in which header file?

  • A ctype.h
  • B stdio.h
  • C string.h
  • D math.h

Q 16: A string can be read using which function(s)?

  • A gets()
  • B scanf()
  • C getchar()
  • D all of these

Q 17: Replace("XXXYYYZZZ", "XY", "AB") =

  • A XXABYYZZZ
  • B XABYYYZZZ
  • C ABXXXYYYZZ
  • D ABXXXYYYZZZ

Q 18: The index of U in Oxford University Press is?

  • A 5
  • B 6
  • C 7
  • D 8

Q 19: s1 =

  • A strcat(s1,s2,s3)
  • B strcat(s1(strcat(s2,s3)))
  • C strcpy(s1, strcat(s2,s3))
  • D strcpy(s2, strcat(s2,s3))

Q 20: strlen(

  • A 22
  • B 23
  • C 24
  • D 25

Q 21: Which function adds a string to the end of another string?

  • A stradd()
  • B strcat()
  • C strtok()
  • D strcpy()

Q 22: A data structure that can store related information together is called

  • A Array
  • B String
  • C Structure
  • D All of these

Q 23: A data structure that can store related information of different data types together is called

  • A Array
  • B String
  • C Structure
  • D All of these

Q 24: Memory for a structure is allocated at the time of

  • A Structure definition
  • B Structure variable declaration
  • C Structure declaration
  • D Function declaration

Q 25: A structure member variable is generally accessed using

  • A Address operator
  • B Dot operator
  • C Comma operator
  • D Ternary operator

Q 26: A structure that can be placed within another structure is known as

  • A Self-referential structure
  • B Nested structure
  • C Parallel structure
  • D Pointer to structure

Q 27: A union member variable is generally accessed using the

  • A Address operator
  • B Dot operator
  • C Comma operator
  • D Ternary operator

Q 28: typedef can be used with which of these data types?

  • A struct
  • B union
  • C enum
  • D all of these