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