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iOS

Posted by Alexandra Kaplan
Alexandra Kaplan
1,167 Points

Why isn't this working for the Fizz challenge?

It says to write a code that will print out the word "Fizz" whenever a number is divisible by three in the set. So I wrote:

let numbers = [1,2,3,4,5,6]
for number in numbers {
if ("\(number)%3=0{println    ("Fizz")})
}
var item = 6
item

1 Answer

Sean Do
Sean Do
11,933 Points

Be careful when opening and closing with Parentheses and Quotes. You're very close to the answer, but you need to use the == operator instead of = operator.

let numbers = [1,2,3,4,5,6]
for number in numbers {
    if number % 3 == 0 {
        println("Fizz")
    }
}
Alexandra Kaplan
Alexandra Kaplan
1,167 Points

It worked!! Thanks Sean! Can you explain the difference between when you use "(number)" and when you do not?

Sean Do
Sean Do
11,933 Points

Oh I see, what you're trying to do. You're trying to use String Interpolation in an if statement. String Interpolation is meant readability in code for Output or println(). It's best used in println() or between quotes that you want 2 or more variables in a sentence.

// Example #1 w/o String Interpolation
var greeting = "Hello"
var name = "Sean"
println(greeting + " " + name) // Output: "Hello Sean"

// Example #2 w/ String Interpolation
var greeting = "Hello "
var name = "Sean"
println("\(greeting) \(name)") // Output: "Hello Sean"

For if statement, you can use the variable without String Interpolation, because it's asking a condition not a String type. Hopefully, this makes sense. I'm sure, a Moderator can do better explanation at this.

Happy Coding!

Alexandra Kaplan
Alexandra Kaplan
1,167 Points

Wonderful, got it. Thank you!