Two D Arrays

Lesson 108/120

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Data Structures and Algorithms C++ Fundamentals

Lesson 108/120

2D Arrays

Essentially an array of arrays, representing data in a grid or table format with rows and columns.

DECLARATION

int matrix[3][4]; // 3 rows, 4 columns

int grid[2][2] = {
    {1, 2},
    {3, 4}
};

Accessing Elements

Use two indices: matrix[row][col]

int val = grid[1][0]; // Access row 1, col 0 (value 3)

GRAPHICS & DP

2D arrays are widely used in game development (tile maps), image processing (pixels), and dynamic programming (memoization tables).

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Matrix