Adding 2D Arrays In C.

Hello, my C friends, today we'll be seeing how to add a 2D array using the C language.

But first, I want you to know that you require a little knowledge of arrays and for loops to understand what's going on in this lesson.

Alright so we want to add a 2D array, but let's first see what we know about 2D arrays.

• They are represented in matrix form. What I mean is you can represent 2D arrays as a matrix, making it easy to add.
• They're arrays within an array.
• They're indexed with two subscripts.
• They're easy to learn as long as you know how to use the for loops.

Let's start off with the code below, I'll explain in the code using comments.

#include<stdio.h>

int main(void) {
//first, we have to declare two 2D arrays
int a[2][2];

int b[2][2];

int sum[2][2];

printf("Enter elements of the first array: \n");
//now, use a for loop to get the user to enter the numbers in the array

for(int i = 0; i < 2; i++) {
      for(int j = 0; j < 2; j++) {
          printf("Enter element a[%d][%d] :  ",i,j);
          scanf("%d",&a[i][j]);
      }
}
printf("\n Enter the elements of the second array: \n");
// now I'm taking the input of the second array

for(int i = 0; i < 2; i++) {
      for(int j = 0; j < 2; j++) {
          printf("Enter element b[%d][%d] :  ",i,j);
          scanf("%d",&b[i][j]);
      }
}

//now, we're going to create another for loop which takes the sum of the two arrays.

for(int i = 0; i < 2; i++) {
      for(int j = 0; j < 2; j++) {
         sum[i][j] = a[i][j] + b[i][j];
      }
}


//This is the last loop used to display the sum

for(int i = 0; i < 2; i++) {
      for(int j = 0; j < 2; j++) {
          printf("%d\t ", sum[i][j]);

      }
      printf("\n");
}
return 0;
    }

And there you have it, how to add two arrays using C.

Until next time.

Peace.