题解 | #The Biggest Water Problem#
The Biggest Water Problem
http://www.nowcoder.com/practice/435aa556e093463891f6da7d322140a4
- #include<stdio.h>
- int main()
- {
- int n = 0;
- int sum = 0;
- scanf("%d", &n);
- do
- {
- sum = 0;
- while (n)
- {
- sum += n % 10;
- n /= 10;
- }
- n = sum;
- } while (sum > 9);
- printf("%d", sum);
- return 0;
- }
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