for(int i=0;;i++)
{
int x=0,y=0;
scanf(“%d %d”,&x,&y);
if(x<=0||y<=0)
break;
else
{
if(x>y)
{
int t = x;
x = y;
y = t;

        }
            int sum = 0;
            for(int j = x;j<=y;j++)
            {
                printf("%d ",j);
                sum +=j;
            }
            printf("Sum=%d\n",sum);

    }
}

//确定swap范围