#The Biggest Water Problem#
The Biggest Water Problem
https://www.nowcoder.com/practice/435aa556e093463891f6da7d322140a4
#include <stdio.h>
int UnitSum(int x)
{
int sum = 0;
while (x)
{
sum += x % 10;
x /= 10;
}
return sum;
}
int main() {
int num = 0;
while (scanf("%d",&num) != EOF)
{
while (num > 9)
{
num = UnitSum(num);
}
printf("%d ",num);
}
return 0;
}
这样才显得专业
