Write a C Program to check if two matrices are equal

By | 18.11.2016

Check if two matrices are equal


Write a C Program to check if two matrices are equal. Here’s simple program to check whether two matrices are equal or not in C Programming Language.


What is Matrix ?


Matrix representation is a method used by a computer language to store matrices of more than one dimension in memory. C uses “Row Major”, which stores all the elements for a given row contiguously in memory.

Two-dimensional Arrays : :

The simplest form of multidimensional array is the two-dimensional array. A two-dimensional array is, in essence, a list of one-dimensional arrays. An m × n (read as m by n) order matrix is a set of numbers arranged in m rows and n columns.

To declare a two-dimensional integer array of size [x][y], you would write something as follows −

  • type arrayName [ x ][ y ];

Where type can be any valid C data type and arrayName will be a valid C identifier.


Below is the source code for C Program to check if two matrices are equal which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :


/*  C Program to check if two matrices are equal  */

#include <stdio.h>

int main()
{
    int A[10][10],B[10][10],i,j,m,n;
    int row, col, isEqual;

    printf("Enter no. of rows :: ");
        scanf("%d", &m);
        printf("\nEnter no. of cols :: ");
        scanf("%d",&n);
        printf("\nEnter values to the matrix A :: \n");
        for (i = 0; i < m; i++)
        {
            for (j = 0; j < n; j++)
            {
                 printf("\nEnter a[%d][%d] value :: ",i,j);
                 scanf("%d", &A[i][j]);
        }
    }

    printf("\nThe given matrix A is :: \n\n");

        for (i = 0; i < m; ++i)
        {
            for (j = 0; j < n; ++j)
            {
                printf("\t%d", A[i][j]);
            }
            printf("\n\n");
        }

    /*
     * Reads elements in second matrix from user
     */
    printf("\nEnter values to the matrix B :: \n");
        for (i = 0; i < m; i++)
        {
            for (j = 0; j < n; j++)
            {
                 printf("\nEnter a[%d][%d] value :: ",i,j);
                 scanf("%d", &B[i][j]);
        }
    }

    printf("\nThe given matrix B is :: \n\n");

        for (i = 0; i < m; ++i)
        {
            for (j = 0; j < n; ++j)
            {
                printf("\t%d", B[i][j]);
            }
            printf("\n\n");
        }


    /* Assumes that the matrices are equal */
    isEqual = 1;

    for(row=0; row<m; row++)
    {
        for(col=0; col<n; col++)
        {
            /*
             * If the corresponding entries of matrices are not equal
             */
            if(A[row][col] != B[row][col])
            {
                isEqual = 0;
                break;
            }
        }
    }

    /*
     * Checks the value of isEqual
     * As per our assumption if isEqual contains 1 means both are equal
     * If it contains 0 means both are not equal
     */
    if(isEqual == 1)
    {
        printf("\nMatrix A is equal to Matrix B\n");
    }
    else
    {
        printf("\nMatrix A is not equal to Matrix B\n");
    }

    return 0;
}

Output : :


/*  C Program to check if two matrices are equal  */

Enter no. of rows :: 3

Enter no. of cols :: 3

Enter values to the matrix A ::

Enter a[0][0] value :: 1

Enter a[0][1] value :: 2

Enter a[0][2] value :: 3

Enter a[1][0] value :: 4

Enter a[1][1] value :: 5

Enter a[1][2] value :: 6

Enter a[2][0] value :: 7

Enter a[2][1] value :: 8

Enter a[2][2] value :: 9

The given matrix A is ::

        1       2       3

        4       5       6

        7       8       9


Enter values to the matrix B ::

Enter a[0][0] value :: 1

Enter a[0][1] value :: 2

Enter a[0][2] value :: 3

Enter a[1][0] value :: 4

Enter a[1][1] value :: 5

Enter a[1][2] value :: 6

Enter a[2][0] value :: 7

Enter a[2][1] value :: 8

Enter a[2][2] value :: 9

The given matrix B is ::

        1       2       3

        4       5       6

        7       8       9


Matrix A is equal to Matrix B

Process returned 0

Above is the source code for C Program to check if two matrices are equal which is successfully compiled and run on Windows System.The Output of the program is shown above .

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About Tunde A

My name is Tunde Ajetomobi, a Tech Enthusiast and Growth Hacker. I enjoy creating helpful content that solves problem across different topics. Codezclub is my way of helping young aspiring programmers and students to hone their skills and find solutions on fundamental programming languages.

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