For Loops and stopping conditions

Question

Can anyone explain why the answers are what they are please? The first one i guess its because the stopping condition is already reached so it skips the statement but question 1

Answer 1

Regarding question 13: there's a semicolon behind the for-loop. Because of that, the loop will first be execuetd until n no longer is > 0 => it is zero then. Then, the print will show a zero.