# C Program to Subtract Two Matrices

In this tutorial, i am going to show you how to subtract two matrices in c programs.

## Algorithm to Subtract Two Matrices

Follow the below given algorithm to write a program to subtract two matrices; as follows:

• START
• Step 1 -> Input matrix 1 and matrix 2.
• Step 2 -> If the number of rows and number of columns of matrix 1 and matrix 2 are equal then execute step 3 else subtraction not possible
• Step 3 -> for i=1 to rows[matrix 1]
• for j=1 to columns [matrix 1]
• Input matrix 1 [i,j]
• Input matrix 2 [i,j]
• matrix 3 [i,j]= matrix 1 [i,j] – matrix 2 [i,j];
• step 4-> Display matrix 3 [i,j];
• STOP

## C Program to Subtract Two Matrices

```/* C Program to Subtract Two Matrices */
#include<stdio.h>

int main()
{
int i, j, rows, columns, a[10][10], b[10][10];
int Subtraction[10][10];

printf("\n Please Enter Number of rows and columns  :  ");
scanf("%d %d", &i, &j);

printf("\n Please Enter the First Matrix Elements\n");
for(rows = 0; rows < i; rows++)
{
for(columns = 0;columns < j;columns++)
{
scanf("%d", &a[rows][columns]);
}
}

printf("\n Please Enter the Second Matrix Elements\n");
for(rows = 0; rows < i; rows++)
{
for(columns = 0;columns < j;columns++)
{
scanf("%d", &b[rows][columns]);
}
}

for(rows = 0; rows < i; rows++)
{
for(columns = 0;columns < j;columns++)
{
Subtraction[rows][columns] = a[rows][columns] - b[rows][columns];
}
}

printf("\n After Subtracting Matrix a from Matrix b = a - b \n");
for(rows = 0; rows < i; rows++)
{
for(columns = 0; columns < j; columns++)
{
printf("%d \t ", Subtraction[rows][columns]);
}
printf("\n");
}
return 0;
}```

The result of the above c program; as follow:

```Please Enter Number of rows and columns  :  3 3
Please Enter the First Matrix Elements
10 20 30
40 50 60
70 80 90
Please Enter the Second Matrix Elements
1 2 3
4 5 6
7 8 9
After Subtracting Matrix a from Matrix b = a - b
9 	 18 	 27
36 	 45 	 54
63 	 72 	 81 ```

Categories C