编程实现：
1+11+111+1111+11111+...+111111111=?
.....
9+99+999+9999+99999+...+999999999=?

void main()
{
    int i,j;
    long s=0,p=0;
    for (i=1;i<=9;i++)
    {
        for (j=1;j<=9;j++)
        {
            s=s*10+i;
            p+=s;
            if (j==9)
                printf("%ld=",s);
            else
                printf("%ld+",s);
        }
        printf("%ld\n\n",p);
        s=0;p=0;
    }   
}

楼主的想法与算法实在叫人佩服，努力学习中...

飞燕的想法太精妙了，晚生佩服！