C Exercises: Accept two matrices and check whether they are equal

C Array: Exercise-30 with Solution

Write a program in C to accept two matrices and check whether they are equal.

The task is to write a C program that accepts two matrices and checks if they are equal. The program prompts the user to input the dimensions and elements of both matrices, then compares corresponding elements. If all elements are identical, the program will confirm that the matrices are equal.

Visual Presentation:

Sample Solution:

C Code:

#include <stdio.h>
#include <stdlib.h>

int main() {
    int arr1[50][50], brr1[50][50];
    int i, j, r1, c1, r2, c2, flag = 1;

    // Display the purpose of the program
    printf("\n\nAccept two matrices and check whether they are equal :\n");
    printf("-----------------------------------------------------------\n");

    // Input Rows and Columns of the 1st matrix
    printf("Input Rows and Columns of the 1st matrix :");
    scanf("%d %d", &r1, &c1);

    // Input Rows and Columns of the 2nd matrix
    printf("Input Rows and Columns of the 2nd matrix :");
    scanf("%d %d", &r2, &c2);

    // Input elements into the first matrix
    printf("Input elements in the first matrix :\n");
    for(i = 0; i < r1; i++) {
        for(j = 0; j < c1; j++) {
            printf("element - [%d],[%d] : ", i, j);
            scanf("%d", &arr1[i][j]);
        }
    } 

    // Input elements into the second matrix
    printf("Input elements in the second matrix :\n");
    for(i = 0; i < r2; i++) {
        for(j = 0; j < c2; j++) {
            printf("element - [%d],[%d] : ", i, j);
            scanf("%d", &brr1[i][j]);
        }
    }   

    // Display the first matrix
    printf("The first matrix is :\n");
    for(i = 0; i < r1; i++) {
        for(j = 0; j < c1; j++) {
            printf("% 4d", arr1[i][j]);
        }
        printf("\n");
    }

    // Display the second matrix
    printf("The second matrix is :\n");
    for(i = 0; i < r2; i++) {
        for(j = 0; j < c2; j++) {
            printf("% 4d", brr1[i][j]);
        }
        printf("\n");
    }

    // Comparing two matrices for equality
    if(r1 == r2 && c1 == c2) {
        printf("The Matrices can be compared : \n");
        for(i = 0; i < r1; i++) {
            for(j = 0; j < c2; j++) {
                if(arr1[i][j] != brr1[i][j]) {
                    flag = 0;
                    break;
                }
            }
        }
    } else {
        printf("The Matrices Cannot be compared :\n");
        exit(1);
    }

    // Display whether matrices are equal or not
    if(flag == 1)
        printf("Two matrices are equal.\n\n");
    else
        printf("But, two matrices are not equal.\n\n");

    return 0;
}

Sample Output:

Accept two matrices and check whether they are equal :                                                        
 -----------------------------------------------------------                                                  
Input Rows and Columns of the 1st matrix :2 2                                                                 
Input Rows and Columns of the 2nd matrix :2 2                                                                 
Input elements in the first matrix :                                                                          
element - [0],[0] : 1                                                                                         
element - [0],[1] : 2                                                                                         
element - [1],[0] : 3                                                                                         
element - [1],[1] : 4                                                                                         
Input elements in the second matrix :                                                                         
element - [0],[0] : 1                                                                                         
element - [0],[1] : 2                                                                                         
element - [1],[0] : 3                                                                                         
element - [1],[1] : 4                                                                                         
The first matrix is :                                                                                         
   1   2                                                                                                      
   3   4                                                                                                      
The second matrix is :                                                                                        
   1   2                                                                                                      
   3   4  
The Matrices can be compared :                                                                                
Two matrices are equal.

Flowchart:

C Programming Code Editor:

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