Diagonal Difference Hacker Rank Solution In C-language | | Hacker Rank Solution

Diagonal Difference Hacker Rank Solution In C-language | | Hacker Rank Solution

Question

Given a square matrix, calculate the absolute difference between the sums of its diagonals.

Input Format

The first line contains a single integer,  denoting the number of rows and columns in the matrix . 
The next  lines denote the matrix 's rows, with each line containing  space-separated integers describing the columns.

Answer

#include <math.h>

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <assert.h>

#include <limits.h>

#include <stdbool.h>

int main() {

    int n;

    int i=0,sum=0,j,sum2=0;

    scanf("%d",&n);

    int a[n][n];

    for(int a_i = 0; a_i < n; a_i++){

       for(int a_j = 0; a_j < n; a_j++){

         

          scanf("%d",&a[a_i][a_j]);

       }

    }

 while(i<n)

 {

  sum=sum+a[i][i];

  i++;

 }

    j=n-1,i=0;

 while(i<n)

 {

  sum2=sum2+a[i][j];

  i++;

        j--;

 }

    printf("%d",abs(sum-sum2));

    return 0;

}