The Biggest Water Problem
The Biggest Water Problem
https://www.nowcoder.com/practice/435aa556e093463891f6da7d322140a4
#include <stdio.h>
int sun(int a)
{
int tmt=a;
int ptr=0;
int sum=0;
while(tmt)
{
ptr=tmt%10;
tmt=tmt/10;
sum=sum+ptr;
}
if(sum>=10)
{
return sun(sum);
}
return sum;
}
int main() {
int a=0;
scanf("%d",&a);
int ret=sun(a);
printf("%d",ret);
return 0;
}
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