Question

write a C program to add matrices using two dimensional arrays along with manual tracing​

Answer 1

Answer:

#include <stdio.h>

int main() {

   int r, c, a[100][100], b[100][100], sum[100][100], 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]);

       }

   // adding two matrices

   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("\n\n");

           }

       }

   return 0;

Explanation:

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