1. Initialize `s = 0`, `i = 5`.
2. Loop while `i > 0`:
- `i = 5`: `i = 4`, `s = 0 + 4 = 4`
- `i = 4`: `i = 3`, `s = 4 + 3 = 7`
- `i = 3`: `i = 2`, `s = 7 + 2 = 9`
- `i = 2`: `i = 1`, `s = 9 + 1 = 10`
- `i = 1`: `i = 0`, `s = 10 + 0 = 10`
Final answer: s = 10.