Read a natural number n and compute its alternating digit sum,
starting from the most significant digit (leftmost) with a + sign;
signs then alternate: +, -, +, -, ...
For the number 12345, the alternating sum is 1 - 2 + 3 - 4 + 5 = 3.
The program reads from standard input a single natural number `n`. - `0 <= n <= 1000000000` - if `n = 0`, the sum is `0`
The program prints a single integer: the alternating digit sum, followed by a newline.
12345
3
Use the Get Hint button in the action bar to reveal a guided hint.
No comments yet. Be the first to start the discussion!
12345
3
Community solutions unlock after you submit a passing solution. Don't peek.
Create a free account to write code, submit solutions, and track your progress.
