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Swift: Error in returning string as a datatype for extra credit assignment 1.

func fullName(firstName: String, lastName: String) ->String {return firstName + lastName}

When the above function is called to a variable and then displayed there are no issues. But when the function is called within println() as: println("My name is (fulsome("John","Doe"))")

Xcode does not read my string parameters correctly. says "Expected ',' separator". Dont understand whats gone wrong here.

1 Answer

Vittorio Somaschini
Vittorio Somaschini
33,371 Points

Hello Gaurav,

I am not sure what you are willing to do here. In particular I haven't understood what that "fulsome" is.. Is it just a typo?

I have checked the extra credit task to see what it asks and as far as you wrote those first 2 lines of code (which you did), you should be fine.

Trying to guess what you wanted to do I would go, for example with this:

println("My name is " + fullName("John","Doe"))

But I am not sure this is what you what to do as I can't understand that "fulsome" and also please note that both here and in the fullName function code you are missing a space between the first name and the last name.


Hello Vittorio,

Thank you for your advice and time. "fulsome" was a typo(autocorrect). Your solution worked and I am able to run the code. But heres what I am curious about, how does a string behave when returned from a custom function. for example:

For the function below the area is being calculated and can be returned within the println function: func calculateArea(height: Int, width: Int) ->Int { return height * width } println("Area = (calculateArea(10,20))")

Below we have the full name function returning a string func fullName(firstName: String, lastName: String) ->String { return firstName + lastName }

When called to use by the following method(as per your suggestion) there is no problem: var name = fullName("Gaurav", "Raghuvanshy") println(name) println("Name" + fullName("Gaurav", "Raghuvanshy"))

But when treated as a implicit(I guess thats what its called) function like calculateArea above we have errors. println("Name (fullName("Gaurav","Raghuvanshy"))")

Xcode does not recognise the strings as it should and gives the error: "Expected ',' separator" Why is this?

Heres the function and the call I'm curious about: func fullName(firstName: String, lastName: String) ->String { return firstName + lastName } println("Name (fullName("Gaurav","Raghuvanshy"))")