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iOS Objective-C Basics Scope and Loops Review Scope and Loops

Posted by ziruibranton
ziruibranton
1,649 Points

loop syntax error?

int mathTotal; bool isComplete;

for (int i = 5; i < 25; i++){ mathTotal += i; }

isComplete = YES;

it keeps telling me better check for syntax error, but it looks right to me... what did i do wrong? thanks.

variable_assignment.mm 
int mathTotal;
bool isComplete;

for (int i = 5; i < 25; i++){
  mathTotal += i;
}

isComplete = YES;

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi there,

You need to reach 25 so use less than or equal to:

int mathTotal;
bool isComplete;

for (int i = 5; i <= 25; i++){
  mathTotal += i;
}

isComplete = true;

And I don't know if YES is OK, or if you need to use true. The above code worked.

I hope that helps,

Steve.

ziruibranton
ziruibranton
1,649 Points

I tried it in the quiz but didn't work i guess i'll try again, thanks Steve!

Steve Hunter
Steve Hunter
57,712 Points

Just checked; YES works fine is it is just the bounds test of i that's wrong. If you just use less than, i will never reach 25 which is what the challenge asks for. So the loop terminator needs to be less than or equal to 25 so that the value 25 is included in the end result of mathTotal.

Steve.

ziruibranton
ziruibranton
1,649 Points

Hi Steve, yes that's right it worked! thanks so much!! I was trying to do more lessons on object oriented programming but the site said the page doesn't exist...

Steve Hunter
Steve Hunter
57,712 Points

Glad you got that working.

Let me know if the page still doesn't load. That seems odd.

Steve.

ziruibranton
ziruibranton
1,649 Points

I asked treehouse, they said they will release the new lessons sometime next week :)