cpe 11332 Summing digits.c

#include <stdio.h>

int main(void) {
	int n, i, times, sum;
	while(scanf("%d", &n) != EOF) {
		// int sum = 0;
		while(n <= 2000000000) {
				int sum = 0;
				while(n >= 10) {
					sum += n % 10;
					n = n / 10;
				}
				sum = 0;
		}
		
		else if(n == 0) {
			print("%d", sum);
			return 0;
		}
	}
}

不錯