题解 | #TheBiggestWaterProblem#
The Biggest Water Problem
https://www.nowcoder.com/practice/435aa556e093463891f6da7d322140a4
#include<stdio.h>
int water(int n)//小递归，加油
{
int k=0;
int c=n;
while(c)
{
k+=c%10;
c/=10;
}
if(k>=10)
{
return water(k);//递归返回
}
else
return k;
}
int main()
{
int n;
scanf("%d",&n);
printf("%d",water(n));
return 0;
}
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