说明：  有两个各存放在数组A和B中的n位二进制整数，考虑它们的相加问题.两个整数的和以二进制形式存放在具有(n+1)个元素的数组C中
(There are stored in each of the two arrays A and B of the n-bit binary integers, the sum consider their problem two integers in binary form and stored in a (n+1) element array in C)