2D Matrix Absolute Difference Diagonals Elements Sum - c

A Square Matrix has N rows and N columns. Get the matrix as input and find the absolute difference between the sum of the values in the two diagonals.

Input Format: The first line contains N. Next N lines containing the elements of the matrix with N column values separated by a space.

Output Format: Absolute difference between the sum of the values in the two diagonals. 

Boundary Conditions: 

• 1 <= N <= 100 

Example Input/Output 1: 

Input: 

2 

35 80 

90 20 

Output:115 

Example Input/Output 2: 

Input:

4 

1 4 4 2 

2 2 1 8 

8 1 3 5 

10 1 8 3 

Output:

5

Code:

#include<stdio.h>

#include <stdlib.h>

int main()

{

int n,t=0,i,j,d=0;

scanf("%d",&n);

int a[n][n];

for(i=0;i<n;i++){

    for(j=0;j<n;j++){

        scanf("%d",&a[i][j]);

        if(i==j) t+=a[i][j];

        if(i+j==n-1) d+=a[i][j];

    }

}

printf("%d",abs(t-d));

}