Why this code doesn’t work always?

Question

https://code.sololearn.com/cNpTEXbbj26X/?ref=app

This code gets like input the value int lung, that is the dimension of the array, after that it gets the array with a for loop.

In the code there are 4 recursive functions:
-Ordina, that orders the elements of the array in crescent mode
-min, that should return the minimum element of the array
-max, that should return the maximum element of the array
-posmin, that should return the position of the minimum element inside the array

Answer 1

What is the problem? Explain what you're getting and what you should get

Answer 2

the program should order the elements in the array in a crescent order. for example if the array was 8 4 7 2 10 1, the program should give back 1 2 4 7 8 10. in some case it works well, and in other there is an infinite recursion. I don’t know why