Introduction - If you have any usage issues, please Google them yourself
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)