How to create a Two Dimensional Array in C - Step by Step Examples

How to create a Two Dimensional Array in C ?

Answer

To create a Two Dimensional Array in C, you can use an array of arrays.


✐ Examples

1 Creating a 2D Array of Integers

In this example,

  1. We declare and initialize a 2D array of integers named matrix with dimensions 3x3.
  2. We assign values to the elements of the array.
  3. The outer loop iterates over rows, and the inner loop iterates over columns to fill the array.

C Program

#include <stdio.h>
int main() {
    int matrix[3][3];
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            matrix[i][j] = i + j;
        }
    }
    printf("[");
    for (int i = 0; i < 3; i++) {
        printf("[");
        for (int j = 0; j < 3; j++) {
            printf("%d ", matrix[i][j]);
        }
        printf("]\n");
    }
    printf("]\n");
    return 0;
}

Output

[[0 1 2 ]
[1 2 3 ]
[2 3 4 ]
]

2 Creating a 2D Array of Characters

In this example,

  1. We declare and initialize a 2D array of characters named matrix with dimensions 2x2.
  2. We assign values to the elements of the array.
  3. The outer loop iterates over rows, and the inner loop iterates over columns to fill the array.

C Program

#include <stdio.h>
int main() {
    char matrix[2][2];
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 2; j++) {
            matrix[i][j] = 'A' + i + j;
        }
    }
    printf("[");
    for (int i = 0; i < 2; i++) {
        printf("[");
        for (int j = 0; j < 2; j++) {
            printf("%c ", matrix[i][j]);
        }
        printf("]\n");
    }
    printf("]\n");
    return 0;
}

Output

[[A B ]
[B C ]
]

Summary

In this tutorial, we learned How to create a Two Dimensional Array in C language with well detailed examples.


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