scanf("%f",&num);
while(num!=0) //遇到0時結束
{
if(num<0)
printf("%f\n",num);
sum1=sum1+num;//負數之和
}
else
sum2=sum2+num; //正數之和
printf("正數之和是%f\n",sum2);
printf("負數之和是%f\n",sum1);