题解 | #数位之和#

#include <stdio.h>
int main() 
{
    int n;
    int sum = 0;
    scanf("%d", &n);
    while(n % 10 != n)
    {
        int count = n % 10;
        sum = count + sum;
        n = n / 10;
    }
    sum = sum + n;
    printf("%d", sum);
    return 0;
}