Fill in the C code missing in the main function such that the following three ta

Question

Fill in the C code missing in the main function such that the following three tasks are performed.

a) Define a matrix A with dimensions NxN

b) Initialize the matrix A with values from 1 to NxN using two for loops.

c) Compute the sum of the elements on the diagonal (from the bottom-left to the top-right) in A using one for loop. The matrix A is required to follow the format shown below (N=3).

A = 1 2 3

4 5 6

7 8 9

#define N 10

int main(){

// a) Define the matrix A with dimensions NxN

// b) Initialize the elements in A

// c) Compute the sum of the elements on the diagonal of A.

int sum = 0;

printf(“The sum of the diagonal elements is %d ”, sum);

}

//end main

the code is supposed to return a value of 15

Explanation / Answer

#include <stdio.h>
#define N 10

int main(){
// a) Define the matrix A with dimensions NxN
int A[N][N],i,j,n;

printf("Enter the size of square matrix : ");
scanf("%d",&n);

printf(" Enter the elements of array : ");
// b) Initialize the elements in A
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
scanf("%d",&A[i][j]);
}
}
// c) Compute the sum of the elements on the diagonal of A.
int sum = 0;

for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
if(i==j)
sum = sum+A[i][j];
}
}
printf(" The sum of the diagonal elements is %d ", sum);
}
//end main

output:

Enter the size of square matrix :3
Enter the elements of array :

1 2 3
4 5 6
7 8 9

The sum of the diagonal elements is 15

Do ask if any query. Please upvote.

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