Sequence of Numbers and Sum

#include<stdio.h>
int main()
{
    int m,a,b,sum=0,i;
    for(m=1;;m++)
    {
        scanf("%d %d",&a,&b);
        if(a<=0 || b<=0)
            break;
        else
        {
            if(a>b)
            {
                for(i=b; i<=a; i++)
                {
                    printf("%d ",i);
                    sum=sum+i;
                }
                printf("Sum=%d\n",sum);
            }
            else if(b>a)
            {
                for(i=a; i<=b; i++)
                {
                    printf("%d ",i);
                    sum=sum+i;
                }
                printf("Sum=%d\n",sum);
            }
            else if(a==b)
            {
                printf("%d ",a);
                printf("Sum=%d\n",a);
            }
            sum=0;
            a=0;
            b=0;
        }
    }
    return 0;
}