Write a program to add the diagonals of a double dimensional array using c-language?

write a program to add the diagonal elements of a double dimensional array using c-language (in coding form)

Write a program to add the diagonals of a double dimensional array using c-language?
for (i=0;i%26lt;size,i++)


{


for(j=0;j%26lt;size;j++)


{


if(i==j)


sum1+=x[i][j];





if(i+j==size-1)


sum1+=x[i][j];


}


}


the program will sum up both diagonals sepatately


but you need to properly develop code from the logical help i have provided