C Exercises: Read a 2D array of size 3x3 and print the matrix

C Array: Exercise-18 with Solution

Write a program in C for a 2D array of size 3x3 and print the matrix.

The task is to create a C program that defines and prints a 3x3 matrix. The program prompts the user to input elements for each position in the matrix and then displays the complete matrix as output.

Visual Presentation:

Sample Solution:

C Code:

#include <stdio.h>

void main() {
    int arr1[3][3], i, j;

    // Prompt user for input
    printf("\n\nRead a 2D array of size 3x3 and print the matrix :\n");
    printf("------------------------------------------------------\n");

    // Input values for the matrix
    printf("Input elements in the matrix :\n");
    for (i = 0; i < 3; i++) {
        for (j = 0; j < 3; j++) {
            printf("element - [%d],[%d] : ", i, j);
            scanf("%d", &arr1[i][j]);
        }
    }

    // Display the matrix
    printf("\nThe matrix is : \n");
    for (i = 0; i < 3; i++) {
        printf("\n");
        for (j = 0; j < 3; j++)
            printf("%d\t", arr1[i][j]);
    }
    printf("\n\n");
}

Sample Output:

Read a 2D array of size 3x3 and print the matrix :                                                            
------------------------------------------------------                                                        
Input elements in the matrix :                                                                                
element - [0],[0] : 1                                                                                         
element - [0],[1] : 2                                                                                         
element - [0],[2] : 3                                                                                         
element - [1],[0] : 4                                                                                         
element - [1],[1] : 5                                                                                         
element - [1],[2] : 6                                                                                         
element - [2],[0] : 7                                                                                         
element - [2],[1] : 8                                                                                         
element - [2],[2] : 9                                                                                         
                                                                                                              
The matrix is :                                                                                               
                                                                                                              
1       2       3                                                                                             
4       5       6                                                                                             
7       8       9 

Flowchart:

C Programming Code Editor:

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