题解 | 数位之和
数位之和
https://www.nowcoder.com/practice/5e85cc26475449648e668aa98e92d05b
#include <stdio.h>
int main()
{
int n, num, sum = 0;
scanf("%d", &n);
if(n < 0)
n = n * -1;
while(n)
{
num = n % 10;
sum += num;
n /= 10;
}
printf("%d", sum);
return 0;
}