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# Secondary diagonal in 2D array

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

4 Answers

+ 8

What's a secondary diagonal?

+ 8

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 ?

+ 8

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.

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google it đ