Multidimensional Arrays (3D+)
Tags: #◇CCPROG2 #◇C Programming #◇Programming #◇Computer Science #◇Data Structures #◇Data Types #◇Structured Programming #◇Memory Management
◇Overview
int cube[3][4][5]; // 3 layers of 4x5 matrices
◇Details / Theory
Example:
int cube[3][4][5]; // 3 layers of 4x5 matrices
cube[1][2][3] = 99;
Same memory layout rules and function-passing rules apply.
◇Common Pitfalls
Forgetting the syntax for 3D+ declaration — all dimensions must be specified: int cube[X][Y][Z] Confusing memory layout — multidimensional arrays in C are stored in row-major order, so the rightmost index varies fastest When passing to functions, forgetting to specify all dimensions except the first — e.g., void f(int arr[][Y][Z], int x) Using 3D+ arrays when a 1D array with index computation would be simpler and more cache-friendly
◇Summary
TL;DR — 3D+ arrays extend 2D arrays with additional indices:
int arr[X][Y][Z]. Same rules apply: row-major storage, all dimensions except the first must be specified in function parameters. Use sparingly — flattened 1D arrays are often simpler and more efficient.
◇Links
Related: Source / Reference:
◇References & Navigation
- Previous Topic: ◇Two-Dimensional Arrays (2D Arrays)
- Next Topic: ◇Arrays and Functions
- Related Notes: ◇Two-Dimensional Arrays (2D Arrays), ◇Dimensions of Arrays
ACTIVE RECALL VERIFICATION
Select an answer to verify conceptual comprehension and reveal the technical rationale.
How would you declare a 3-dimensional array of integers with dimensions 2, 3, and 4?
Conceptually, how can a 3D array be visualized?
How are multidimensional arrays stored in memory under the hood?