Introduction - If you have any usage issues, please Google them yourself
A data input from the keyboard, determine the parity For even, be decomposed into the sum of two primes (eg: 6 = 3+3, 18 = 11+7, .......) odd, to determine whether is a prime number, if the prime numbers, find its twin primes (eg: 5 twin primes 3 and 7, 11 and 13 twin primes, .......)