单选题 题目:给一个不多于5位的正整数,要求:一、求它是几位数,二、逆序打印出各位数字.x = int(input("input a number:"))a = x // 10000________________c = x % 1000 // 100d = x % 100 // 10e = x % 10if a != 0: print ("there are 5 ",e,d,c,b,a)elif b != 0: print ("there are 4 ",d,c,b,a)elif c != 0: print ("there are 3 ",e,d,c)elif d != 0: print ("there are 2 ",e,d)else: print ("there are 1",e)