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MCQ Practice Single Best Answer Topic: Array in C++

Q What is the last index of an array declared as int a[5];?

Question ID
#24492
Subchapter
Array in C++
Action
Choose one option below

Choose Your Answer

Click an option to check whether your answer is correct.

  • A 5 ✔ ✖
  • B 4 ✔ ✖
  • D 6 ✔ ✖
Correct Answer: B

Explanation

In C++, array indexing starts from 0.

For the array:

int a[5];

  • Total elements = 5

  • Index values = 0, 1, 2, 3, 4

So, the last index is 4, not 5.

Correct Answer: B) 4

Description:
The highest index of an array is always size − 1.

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