# C Program Add Two Matrix

By | March 13, 2020

C program for matrix addition of two matrices

```/* C program to add two matrices

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*/
#include <stdio.h>

int main()
{
int m, n, i, j, matrix1[10][10], matrix2[10][10], sum[10][10];

printf("Enter the number of rows and columns of matrix\n");
scanf("%d%d", &m, &n);
printf("Please Enter %d elements of first matrix\n",m*n);

for (i = 0; i < m; i++)
for (j = 0; j < n; j++)
scanf("%d", &matrix1[i][j]);

printf("Please Enter the %d elements of second matrix\n",m*n);

for (i = 0; i < m; i++)
for (j = 0 ; j < n; j++)
scanf("%d", &matrix2[i][j]);

printf("Sum of the two matrices is as follows:\n");

for (i = 0; i < m; i++) {
for (j = 0 ; j < n; j++) {
sum[i][j] = matrix1[i][j] + matrix2[i][j];
printf("%d\t", sum[i][j]);
}
printf("\n");
}

return 0;
}
```

Output

Enter the number of rows and columns of matrix
3
3
Please Enter 9 elements of first matrix
1
2
3
4
5
6
7
8
9
Please Enter the 9 elements of second matrix
5
6
4
3
2
1
7
8
9
Sum of the two matrices is as follows:

```6    8    7
7    7    7
14   16   18

```

We can add two matrices, if they are both of the same order. That is they have same number of rows and columns.

We cannot add two matrices with different dimentions.