函数一：判断从3到100之间有多少个素数，并输出所有的素数

函数二：如果一个数恰好等于它的因子之和，那么这个数就称为 "完数 ".此程序是找出1--500之间的所有完数并输出出来

函数三：有1、2、3四个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？

函数四：输入三个整数a,b,c，请把这三个数由小到大输出。

函数五：输出乘法表（9*9）-Function one: determine how many prime numbers between 3-100 from there, and the output of all primes

Function Two: If a number is exactly equal to the sum of its factors, then this number is called a "complete count" This program is to find one- all finished between 500 and outputs it.

Function Three: There are four numbers 1,2,3, how many duplicate each other with no three-digit numbers can be formed? How many are?

Function Four: Enter three integers a, b, c, ask these three the number of small to large output.

Function Five: Output multiplication tables (9* 9)