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# C Program to Add Two Matrices Using Multi-dimensional Arrays

## Program to Add Two Matrices

``````
#include <stdio.h>
int main(){
int r, c, a, b, sum, i, j;
printf("Enter the number of rows (between 1 and 100): ");
scanf("%d", &r);
printf("Enter the number of columns (between 1 and 100): ");
scanf("%d", &c);

printf("nEnter elements of 1st matrix:n");
for (i = 0; i < r; ++i)
for (j = 0; j < c; ++j) {
printf("Enter element a%d%d: ", i + 1, j + 1);
scanf("%d", &a[i][j]);
}

printf("Enter elements of 2nd matrix:n");
for (i = 0; i < r; ++i)
for (j = 0; j < c; ++j) {
printf("Enter element a%d%d: ", i + 1, j + 1);
scanf("%d", &b[i][j]);
}

for (i = 0; i < r; ++i)
for (j = 0; j < c; ++j) {
sum[i][j] = a[i][j] + b[i][j];
}

// printing the result
printf("nSum of two matrices: n");
for (i = 0; i < r; ++i)
for (j = 0; j < c; ++j) {
printf("%d   ", sum[i][j]);
if (j == c - 1) {
printf("nn");
}
}

return 0;
}
``````

Output

```Enter the number of rows (between 1 and 100): 2
Enter the number of columns (between 1 and 100): 3

Enter elements of 1st matrix:
Enter element a11: 2
Enter element a12: 3
Enter element a13: 4
Enter element a21: 5
Enter element a22: 2
Enter element a23: 3
Enter elements of 2nd matrix:
Enter element a11: -4
Enter element a12: 5
Enter element a13: 3
Enter element a21: 5
Enter element a22: 6
Enter element a23: 3

Sum of two matrices:
-2   8   7

10   8   6
```

In this program, the user is asked to enter the number of rows `r` and columns `c`. Then, the user is asked to enter the elements of the two matrices (of order `r*c`).

## C Example for Beginners: C Program to Add Two Matrices Using Multi-dimensional Arrays

#### Free Machine Learning & Data Science Coding Tutorials in Python & R for Beginners. Subscribe @ Western Australian Center for Applied Machine Learning & Data Science. ```