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

C# Sharp Array: Exercise-30 with Solution

Write a C# Sharp program to accept two matrices and check equality.

Sample Solution:-

C# Sharp Code:

using System;

public class Exercise30 
{  
    public static void Main()
    {
        // Declaration of matrices and variables for matrix manipulation
        int[,] arr1 = new int[50, 50]; // Declare the first matrix
        int[,] brr1 = new int[50, 50]; // Declare the second matrix
        int i, j, r1, c1, r2, c2, flag = 1; // Declare variables for iteration and matrix dimensions

        // User input for dimensions of the first matrix
        Console.Write("\n\nAccept two matrices and check whether they are equal :\n ");
        Console.Write("-----------------------------------------------------------\n");   
        Console.Write("Input the number of rows in the 1st matrix : ");
        r1 = Convert.ToInt32(Console.ReadLine()); // Read number of rows for the first matrix
        Console.Write("Input the number of columns in  the 1st matrix : ");
        c1 = Convert.ToInt32(Console.ReadLine()); // Read number of columns for the first matrix

        // User input for dimensions of the second matrix
        Console.Write("Input the number of rows in the 2nd matrix : ");
        r2 = Convert.ToInt32(Console.ReadLine()); // Read number of rows for the second matrix
        Console.Write("Input the number of columns in  the 2nd matrix : ");
        c2 = Convert.ToInt32(Console.ReadLine()); // Read number of columns for the second matrix

        // User input for elements of the first matrix
        Console.Write("Input elements in the first matrix :\n");
        for (i = 0; i < r1; i++) // Loop through rows of the first matrix
        {
            for (j = 0; j < c1; j++) // Loop through columns of the first matrix
            {
                // Prompt user to enter matrix element
                Console.Write("element - [{0}],[{1}] : ", i, j);
                arr1[i, j] = Convert.ToInt32(Console.ReadLine()); // Read user input and store in the first matrix
            }
        } 

        // User input for elements of the second matrix
        Console.Write("Input elements in the second matrix :\n");
        for (i = 0; i < r2; i++) // Loop through rows of the second matrix
        {
            for (j = 0; j < c2; j++) // Loop through columns of the second matrix
            {
                // Prompt user to enter matrix element
                Console.Write("element - [{0}],[{1}] : ", i, j);
                brr1[i, j] = Convert.ToInt32(Console.ReadLine()); // Read user input and store in the second matrix
            }
        }   

        // Display the first matrix
        Console.Write("The first matrix is :\n");
        for (i = 0; i < r1; i++) // Loop through rows of the first matrix
        {
            for (j = 0; j < c1; j++) // Loop through columns of the first matrix
                Console.Write("{0}  ", arr1[i, j]); // Print each element of the first matrix
            Console.Write("\n"); // Move to the next row
        }

        // Display the second matrix
        Console.Write("The second matrix is :\n");
        for (i = 0; i < r2; i++) // Loop through rows of the second matrix
        {
            for (j = 0; j < c2; j++) // Loop through columns of the second matrix
                Console.Write("{0}  ", brr1[i, j]); // Print each element of the second matrix
            Console.Write("\n"); // Move to the next row
        }
	
        /* Comparing two matrices for equality */
        if (r1 != r2 || c1 != c2)
        {  
            Console.Write("The Matrices Cannot be compared :\n"); // Display message if matrices have different dimensions
        }
        else
        {
            Console.Write("The Matrices can be compared : \n"); // Display message if matrices can be compared
            for (i = 0; i < r1; i++) // Loop through rows
            {
                for (j = 0; j < c2; j++) // Loop through columns
                {
                    if (arr1[i, j] != brr1[i, j]) // Check for inequality of corresponding elements
                    {
                        flag = 0; // Set flag to 0 if unequal elements are found
                        break; // Break the loop as inequality is found
                    }
                }
            }
            if (flag == 1)
                Console.Write("Two matrices are equal.\n\n"); // Display message if matrices are equal
            else
                Console.Write("But, two matrices are not equal\n\n"); // Display message if matrices are not equal
        }
    }	
}

Sample Output:

Accept two matrices and check whether they are equal :                                                        
 -----------------------------------------------------------                                                  
Input the number of rows in the 1st matrix : 2                                                                
Input the number of columns in  the 1st matrix : 2                                                            
Input the number of rows in the 2nd matrix : 2                                                                
Input the number of columns in  the 2nd matrix : 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] : 5                                                                                         
element - [0],[1] : 6                                                                                         
element - [1],[0] : 7                                                                                         
element - [1],[1] : 8                                                                                         
The first matrix is :                                                                                         
1  2                                                                                                          
3  4                                                                                                          
The second matrix is :                                                                                        
5  6                                                                                                          
7  8                                                                                                          
The Matrices can be compared :                                                                                
But,two matrices are not equal

Flowchart:

C# Sharp Code Editor:

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