输出各位数之和

#include <stdio.h>
#include <math.h>

void main()
{
	int num1;
	scanf("%d",&num1);
	int num = num1;
	int sum = 0;
	int i;
	while(num > 0)
	{
		i = num % 10;
		num = num / 10;
		sum += i;
	}
	printf("%d\n",sum);
}