实现
#include <cstdio>
int main() {
long long num;
scanf("%lld",&num);
int sum = 0;
while (num != 0)
{
sum += num % 10;
num /= 10;
}
printf("%d",sum);
}
#include <cstdio>
int main() {
long long num;
scanf("%lld",&num);
int sum = 0;
while (num != 0)
{
sum += num % 10;
num /= 10;
}
printf("%d",sum);
}