题解 | The Biggest Water Problem
The Biggest Water Problem
https://www.nowcoder.com/practice/435aa556e093463891f6da7d322140a4
#include <stdio.h>
void judge(long long n)
{
long long a, sum=0;
while (n)
{
a = n % 10;
n = n / 10;
sum += a;
}
if (sum < 10)//递归判断条件
{
printf("%lld", sum);
}
else
{
judge(sum);
}
}
int main()
{
long long n;
scanf("%lld", &n);
judge(n);
return 0;
}
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