写出一个程序，接受一个以N/D的形式输入的分数，其中N为分子，D为分母，输出它的小数形式。如果它的小数形式存在循环节，要将其用括号括起来。例如：1/3=.3333…表示为.(3),又如41/333=.123123123…表示为.(123)。-Write a program to accept a N/D in the form of input points, where N is the molecular, D is the denominator, the output of its decimal form. If its decimal form circular section, to the brackets. For example: 1/3 =. 3333 ... that is. (3), and if that is 41/333 =. 123 123 123 .... (123).