Program to calculate the subtraction of 2 matrices

Python

#Initialize matrix a  
a = [  
        [4, 5, 6],  
        [3, 4, 1],  
        [1, 2, 3]  
    ];  
   
#Initialize matrix b  
b = [  
          [2, 0, 3],  
         [2, 3, 1],  
         [1, 1, 1]  
     ];  
   
#Calculates number of rows and columns present in given matrix  
rows = len(a);  
cols = len(a[0]);  
   
#Array diff will hold the result and is initialized with zeroes.  
diff = [[0]*rows for i in range(cols)];  
   
#Performs subtraction of matrices a and b. Store the result in matrix diff  
for i in range(0, rows):  
    for j in range(0, cols):  
        diff[i][j] = a[i][j] - b[i][j];  
   
print("Subtraction of two matrices: ");  
for i in range(0, rows):  
    for j in range(0, cols):  
       print(diff[i][j]),  
   
    print(" ");  

Output:

Subtraction of two matrices: 
2 5 3 
1 1 0 
0 1 2 

C

#include <stdio.h>  
   
int main()  
{  
    int rows, cols;  
          
    //Initialize matrix a  
    int a[][3] = {  
                    {4, 5, 6},  
                    {3, 4, 1},  
                    {1, 2, 3}  
                 };  
      
    //Initialize matrix b  
    int b[][3] = {  
                      {2, 0, 3},  
                     {2, 3, 1},  
                     {1, 1, 1}  
                 };  
      
    //Calculates number of rows and columns present in given matrix  
    rows = (sizeof(a)/sizeof(a[0]));  
    cols = (sizeof(a)/sizeof(a[0][0]))/rows;  
      
    //Array diff will hold the result  
    int diff[rows][cols];  
      
    //Performs subtraction of matrices a and b. Store the result in matrix diff  
    for(int i = 0; i < rows; i++){  
        for(int j = 0; j < cols; j++){  
            diff[i][j] = a[i][j] - b[i][j];  
        }  
    }  
      
    printf("Subtraction of two matrices: \n");  
    for(int i = 0; i < rows; i++){  
        for(int j = 0; j < cols; j++){  
           printf("%d ", diff[i][j]);  
        }  
        printf("\n");  
    }  
   
    return 0;  
}  

Output:

Subtraction of two matrices: 
2 5 3 
1 1 0 
0 1 2 

JAVA

public class SubMatrix  
{  
    public static void main(String[] args) {  
        int rows, cols;  
          
        //Initialize matrix a  
          int a[][] = {  
                          {4, 5, 6},  
                          {3, 4, 1},  
                          {1, 2, 3}  
                       };  
            
          //Initialize matrix b  
          int b[][] = {  
                          {2, 0, 3},  
                         {2, 3, 1},  
                         {1, 1, 1}  
                     };  
            
          //Calculates number of rows and columns present in given matrix  
          rows = a.length;  
        cols = a[0].length;  
          
          //Array diff will hold the result  
        int diff[][] = new int[rows][cols];  
          
        //Performs subtraction of matrices a and b. Store the result in matrix diff  
        for(int i = 0; i < rows; i++){  
            for(int j = 0; j < cols; j++){  
                diff[i][j] = a[i][j] - b[i][j];  
            }  
        }  
          
        System.out.println("Subtraction of two matrices: ");  
        for(int i = 0; i < rows; i++){  
            for(int j = 0; j < cols; j++){  
               System.out.print(diff[i][j] + " ");  
            }  
            System.out.println();  
        }  
    }  
}  

Output:

Subtraction of two matrices: 
2 5 3 
1 1 0 
0 1 2 

C#

using System;  
                      
public class SubMatrix  
{  
    public static void Main()  
    {  
        int rows, cols;  
          
        //Initialize matrix a  
          int[,] a = {  
                          {4, 5, 6},  
                          {3, 4, 1},  
                          {1, 2, 3}  
                     };  
            
          //Initialize matrix b  
          int[,] b = {  
                          {2, 0, 3},  
                         {2, 3, 1},  
                         {1, 1, 1}  
                    };  
            
          //Calculates number of rows and columns present in given matrix  
          rows = a.GetLength(0);  
        cols = a.GetLength(1);  
          
          //Array diff will hold the result  
        int[,] diff = new int[rows, cols];  
          
        //Performs subtraction of matrices a and b. Store the result in matrix diff  
        for(int i = 0; i < rows; i++){  
            for(int j = 0; j < cols; j++){  
                diff[i,j] = a[i,j] - b[i,j];  
            }  
        }  
          
        Console.WriteLine("Subtraction of two matrices: ");  
        for(int i = 0; i < rows; i++){  
            for(int j = 0; j < cols; j++){  
               Console.Write(diff[i,j] + " ");  
            }  
            Console.WriteLine();  
        }  
    }  
}  

Output:

Subtraction of two matrices: 
2 5 3 
1 1 0 
0 1 2 

PHP

<!DOCTYPE html>  
<html>  
<body>  
<?php  
//Initialize matrix a  
$a = array(  
            array(4, 5, 6),  
            array(3, 4, 1),  
            array(1, 2, 3)  
          );  
   
//Initialize matrix b  
$b = array(  
              array(2, 0, 3),  
             array(2, 3, 1),  
             array(1, 1, 1)  
           );  
   
//Calculates number of rows and columns present in given matrix  
$rows = count($a);  
$cols = count($a[0]);  
   
//Array diff will hold the result and initialize it with 0  
$diff = array_fill(0, $cols, array_fill(0, $rows, 0));  
   
//Performs subtraction of matrices a and b. Store the result in matrix diff  
for($i = 0; $i < $rows; $i++){  
    for($j = 0; $j < $cols; $j++){  
        $diff[$i][$j] = $a[$i][$j] - $b[$i][$j];  
    }  
}  
   
print("Subtraction of two matrices: <br>");  
for($i = 0; $i < $rows; $i++){  
    for($j = 0; $j < $cols; $j++){  
       print($diff[$i][$j] . " ");  
    }  
    print("<br>");  
}  
?>  
</body>  
</html>  

Output:

Subtraction of two matrices: 
2 5 3 
1 1 0 
0 1 2