Data Structure and Algorithms (DSA) MCQs with answers Page - 10

Here, you will find a collection of MCQ questions on Data Structure and Algorithms (DSA). Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. A global variable is a variable

  • (A) declared in the main ( ) function
  • (B) declared in any function other than the main ( ) function
  • (C) declared outside the body of every function.
  • (D) declared any where in the c program.

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Q. main ( ) is an example of

  • (A) library function
  • (B) user defined function
  • (C) header
  • (D) statement

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Q. While incrementing a pointer, its value gets increased by the length of the data type to which it points. This length is called

  • (A) scale factor
  • (B) length factor
  • (C) pointer factor
  • (D) increment factor

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Q. a->b is systematically correct if_____

  • (A) a is a npointer to a structure in which b is a field
  • (B) a and b are structure
  • (C) a is a structure and b is a pointer to a structure
  • (D) a is a pointer to a structure and b is a structure

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Q. Which of the following best describes sorting ?

  • (A) accessing and processing each record exactly once
  • (B) finding the location of the record with a given key
  • (C) arranging the data (record) in some given order
  • (D) adding a new record to the data structure

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Q. A function which calls itself is called as

  • (A) library function
  • (B) directive
  • (C) recursive function
  • (D) none of above

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Q. Where do we use the operator -> ?

  • (A) to access a member of structure
  • (B) to access member of union
  • (C) to access an array
  • (D) both(a) and(b).

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Q. In selection sort of n elements,how many times is the swap function called in the complete execution of the algorithm?

  • (A) 1
  • (B) n-1
  • (C) n(n-1)/2
  • (D) none of these

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Q. Literal means

  • (A) string
  • (B) string constant
  • (C) character
  • (D) alphabet

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Q. Each data item in a record may be a group item composed of sub-items; those items which are indecomposable are called

  • (A) Elementary items
  • (B) Atoms
  • (C) Scalars
  • (D) All of above

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