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iOS

Posted by suyesh bhandari
suyesh bhandari
15,328 Points

OBjective C basics Immersive Examples Code Challenge

Create a while loop that will run as long as 'rubies' is less than 'rubyMax'. During each iteration of the loop, increment 'rubies' by 'rubyReward'. When the loop completes, assign a value of true to 'levelFinished'.

bool levelFinished;
int rubies = 0;
int rubyReward = 7;
int rubyMax = 50;

while (rubies <= rubyMax){
  rubies = rubies + rubyReward;
  if (rubies >= rubyReward){
    levelFinished = TRUE;
    break;
  }
}

Error i get "Oops! It looks like Task 1 is no longer passing."

But task one is perfect. Task one was to initialize these two:

bool levelFinished;
int rubies = 0;

2 Answers

Michael Hulet
Michael Hulet
47,913 Points

This code passes for me:

bool levelFinished;
int rubies = 0;
int rubyReward = 7;
int rubyMax = 50;

while(rubies < rubyMax){
  rubies += rubyReward;
}
levelFinished = true;

Turns out that it does ask you to use the lowercase form of bool, but the two things you were doing in your code is that you were having the loop run while rubies <= rubyMax, where it should simply be <. Also, the way you were setting levelFinished to true was kinda weird, and should just be moved outside the loop, because it will run when the loop is finished

suyesh bhandari
suyesh bhandari
15,328 Points

Okay. I thought when rubies equal rubymax i was supposed to break the loop and make levelfinished to True

Michael Hulet
Michael Hulet
47,913 Points

When rubies equals rubyMax, the loop will end on its own (due to the condition rubies < rubyMax), and will then move onto whatever code comes after the loop. That's a good spot to set levelFinished to true

Michael Hulet
Michael Hulet
47,913 Points
Michael Hulet
Michael Hulet
47,913 Points

The problem is probably with your levelFinished variable. Declaring a boolean in Objective-C as bool (lowercase), is technically valid in most cases, but you need to use the lowercase true and false with it. In Objective-C, it's way more common (and accepted as the correct way) to use the all-caps BOOL (uppercase). That's set using an all-caps YES and NO. What I bet you meant to do was declare levelFinished like this:

BOOL levelFinished = NO; //Always set your variables to a logical initial value when you can

Then, later in the loop, I bet you meant to set it like this:

levelFinished = YES;
suyesh bhandari
suyesh bhandari
15,328 Points

Still the same error. Not sure what is going on. about to give up on objective c and move to swift lol

Michael Hulet
Michael Hulet
47,913 Points

Nah, I would totally recommend sticking with Objective-C first. Can you link me to the challenge, so I can try it?

suyesh bhandari
suyesh bhandari
15,328 Points

https://teamtreehouse.com/library/objectivec-basics-3/practicing-with-immersive-examples/immersive-examples-code-challenge