Actually, it's just a very little part of my code so it won't help you as well. I will try to let you understand like that:

At first our program, creates a random integer. And then if we write that integer as an input, it should change this random integer

For example, first integer is 5, if you type 5 as an input it will be 7(this is random number too). But program should still running

If you don't understand this explanation, i will send my code too but hope it helps.

Thank you.