输入:12
输出:3
#include<stdio.h>
int main()
{
int n,sum=0;
while(scanf("%d",&n)!=EOF)
{
sum=0;
while(n!=0)
{
sum+=n%10;
n=n/10;
}
printf("%d\n",sum);
}
return 0;
}
输入:12
输出:3
#include<stdio.h>
int main()
{
int n,sum=0;
while(scanf("%d",&n)!=EOF)
{
sum=0;
while(n!=0)
{
sum+=n%10;
n=n/10;
}
printf("%d\n",sum);
}
return 0;
}