GATE CSE 2022 Q43: Output of printing a[i][0][k] from a 3-D array
- Programming and Data Structures
- 2 marks
- MCQ
- −2/3 if wrong
Question
What is printed by the following ANSI C program?
#include<stdio.h>
int main(int argc, char *argv[])
{
int a[3][3][3] =
{{1, 2, 3, 4, 5, 6, 7, 8, 9},
{10, 11, 12, 13, 14, 15, 16, 17, 18},
{19, 20, 21, 22, 23, 24, 25, 26, 27}};
int i = 0, j = 0, k = 0;
for( i = 0; i < 3; i++ ){
for(k = 0; k < 3; k++ )
printf("%d ", a[i][j][k]);
printf("\n");
}
return 0;
}Try it: multiple choice: exactly one correct option
Wrong answer costs 2/3 mark in GATE.
Show answer and explanation
Answer: A (official GATE 2022 final answer key)
Concept used: Each inner brace list initialises one a[i] (a 3×3 block) in row-major order; j stays 0 throughout.
First step: a[i][0][k] is the first row of block i, i.e. the first three numbers of the i-th inner list.
Full step-by-step solution
Detailed working, common mistakes and linked mock tests will be available with a free GATEiit account. Log-in is coming soon.
Share this question
Source: official GATE 2022 CS question paper and final answer key, organised by IIT Kharagpur. Question paper · Answer key
More Programming and Data Structures PYQs
- 2026 Session 1 · Q23Non-leaf indices in a 1-indexed binary heap with n odd
- 2026 Session 1 · Q24Empty slots after linear-probing inserts with h(x) = (x+7) mod 11
- 2026 Session 1 · Q33Maximum height of a full binary tree with 23 nodes
- 2026 Session 1 · Q34Output of a C function with a shadowed block variable
- 2026 Session 1 · Q39Recursive length of a non-empty singly linked list
- 2026 Session 1 · Q40Third insertion that can never yield a complete BST of 1..15