Multi-dimensional arrays

In C programming, multi-dimensional arrays are arrays that have more than one dimension. They are commonly used to represent matrices, tables, or other tabular data structures.

To declare and access elements in a multi-dimensional array, you can use multiple sets of brackets [].

Here's an example of a two-dimensional array in C:

#include <stdio.h>

int main() {

    int matrix[3][4] = {

        {1, 2, 3, 4},

        {5, 6, 7, 8},

        {9, 10, 11, 12}

    };    

    // Accessing array elements

    printf("The element at matrix[0][0] is: %d\n", matrix[0][0]);

    printf("The element at matrix[1][2] is: %d\n", matrix[1][2]);

    printf("The element at matrix[2][3] is: %d\n", matrix[2][3]);    

    return 0;

}

Output:

The element at matrix[0][0] is: 1

The element at matrix[1][2] is: 7

The element at matrix[2][3] is: 12

In this example, we declare a two-dimensional integer array `matrix` with 3 rows and 4 columns. We initialize it with some values. To access elements in the array, we use the notation `matrix[row_index][column_index]`, where `row_index` is the index of the desired row, and `column_index` is the index of the desired column.