Recursion problem

Question

From sololearn challenge. I just realized that it ia a recursion problem. Please check out these two "slighly" different code. Could you explain to me?
https://code.sololearn.com/ca8r7ptqbD0L/?ref=app
https://code.sololearn.com/cBybHbk8N9Ys/?ref=app

Answer 1

In "recursion problem.cpp", argument <i> is decremented and printed ONLY inside an `if` conditional block.

In "recursionw.cpp" argument <i> is printed freely. The printing statement is not restricted by the `if` conditional because the `if` conditional omitted the curly brackets block marker {}, which means only the next line following the `if` construct is guarded by the conditional.

This is common behaviour with loops & conditionals. Without curly brackets surrounding its body, only the first one line following the loop / conditional is considered as part of its body.