怎么输出1000!
685*9=
个位相乘取个位,进十位,  下一位相乘进位与个位相加,是否进位,进位与十位相加,相进,依此例推.     
ABC*D=C*D%10
            (C*D/10+B*D%10)>9?-10
                                  B*D/10+A*D%10+1??>9?
                                                       A*D/10
                                             
        5         4+2=6            7+4=1→1        5+1=6
  
    5616   6165
    0123   3210

[ 本帖最后由 忘了 于 2010-6-11 21:05 编辑 ]

比如输出1000!,怎么办!