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Asad Chishty
422 PointsI've added 1 point to the initialScore and assigned it to a constant called totalScore but it isn't correct
Shouldn't this be correct?
If I'm adding +1 to the initialScore and assigning the result of that operation to the totalScore, wouldn't it simply be var totalScore = initialScore + 1 ?
I tried var totalScore = initialScore so that the values would be the same but that didn't work either.
// Enter your code below
var initialScore = 8
initialScore = initialScore + 1
var totalScore = initialScore + 1
2 Answers
Jennifer Nordell
Treehouse TeacherHi there! There are a few things going on here, but most of them are to do with following the instructions of the challenge. First, the challenge explicitly states that totalScore should be declared as a constant. Secondly, you're supposed to be using the increment operator. Third, when this code ends initialScore and totalScore should have the same value. Your code will have initialScore set to 9 and totalScore set to 10.
Take a look:
// Enter your code below
var initialScore = 8
let totalScore = ++initialScore
This will increment initialScore (which changes the value) and then assign it back into totalScore. So initialScore will be 9 and then that 9 will be assigned to total score. It's important to note that you can not use the post-increment operator here. You cannot do let totalScore = initialScore++. That would assign the value of 8 into totalScore and then increment the value of initialScore to 9.
It also feels important to point out that these post and pre increment and decrement operators have been deprecated in Swift 3.
Hope this helps!
Asad Chishty
422 PointsThanks so much Jennifer!
I still need to get used to the terminology lol And I've noticed I tend to learn better by being able to ask questions and get clarifications. Thanks so much for being patient and explaining it all so well!