C program to compute matrix subtraction using two dimensional array

C program to compute matrix subtraction using two dimensional array

This c program is used to compute the subtraction of two matrix using two dimensional array and nested for loops.

Defined the macro for row nad column size using define driective.

a b c           g h i           a-g b-h c-i
d e f      -    j k l      =    d-j e-k f-l
g h i           m n o           g-m h-n i-o

#include<stdio.h>                                                              
                                                                                
#define COLUMN 3                                                                
#define ROW 3                                                                   
                                                                                
void main()                                                                     
{                                                                               
  int matrix1[ROW][COLUMN], matrix2[ROW][COLUMN], matrix3[ROW][COLUMN], matrix4[ROW][COLUMN];
  int i,j;                                                                      
                                                                                
  printf("\nEnter Matrix1: \n");                                                
  for(i=0;i<ROW;i++)                                                            
  {                                                                             
    for(j=0;j<COLUMN;j++)                                                       
    {                                                                           
      scanf("%d", &matrix1[i][j]);                                              
    }                                                                           
  }                                                                             
  printf("\nEnter Matrix2: \n");                                                
  for(i=0;i<ROW;i++)                                                            
  {                                                                             
    for(j=0;j<COLUMN;j++)                                                       
    {                                                                           
      scanf("%d", &matrix2[i][j]);                                              
    }                                                                           
  }                                                                             
  for(i=0;i<ROW;i++)                                                            
  {                                                                             
    for(j=0;j<COLUMN;j++)                                                       
    {                                                                           
      matrix3[i][j] = matrix1[i][j] - matrix2[i][j];                            
    }                                                                           
  }                                                                             
  printf("\nMatrix Subtraction: \n");                                           
  for(i=0;i<ROW;i++)                                                            
  {                                                                             
    for(j=0;j<COLUMN;j++)                                                       
    {                                                                           
      printf("%d\t", matrix3[i][j]);                                            
    }                                                                           
    printf("\n");                                                               
  }                                                                             
}     

Output:

$ cc matrix_subtraction.c 
$ ./a.out 

Enter Matrix1: 
11 12 13
14 15 16
17 18 19

Enter Matrix2: 
1 2 3
4 5 6
7 8 9

Matrix Subtraction: 
10	10	10	
10	10	10	
10	10	10	
$ ./a.out 

Enter Matrix1: 
1 2 3
4 5 6
7 8 9

Enter Matrix2: 
11 12 13
14 15 16
17 18 19

Matrix Subtraction: 
-10	-10	-10	
-10	-10	-10	
-10	-10	-10