Secondary diagonal in 2D array

Question

how to find the summation of the variables in the secondary diagonal of an array with c++ program?

Answer 1

What's a secondary diagonal?

Answer 2

So if you have an array like this:

0,0 0,1 0,2
1,0 1,1 1,2
2,0 2,1 2,2

The secondary diagonal would be 0,2 1,1 2,0 ?

Answer 3

If that's the case I would use a nested for loop and check if that for index (i,j) if((i+j)== (n-1)) where n is the number of rows/columns in the array (assuming that it is square). If that is true then add array[i][j] to a variable sum.

Answer 4

google it 😒