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iOS Swift Functions and Optionals Functions Syntax and Parameters

Posted by jurgen meco
jurgen meco
30 Points

How do i have to type, I'm confused!!!!

please help., i tried many times but still don know what to type, please help.

parameters.swift 
func 
greeting() {
    println("Hello")
}

2 Answers

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! I'm not sure exactly which step you're stuck on, but I'll show my solution and then walk you through it:

func greeting(person: String) {
    println("Hello \(person)")
}

Here we define a function named greeting. This function accepts a parameter named person of type String. Next we print out the line with "Hello". At this point it's going to look up the name that was sent into the person parameter and put it in that spot. So if we sent in "Jennifer", it will print out "Hello Jennifer". Hope this helps! :sparkles:

jurgen meco
jurgen meco
30 Points

ok thank you :)

boris said
boris said
3,607 Points
boris said
boris said
3,607 Points

Also, some other helpful tips for writing better functions in the future is that they always need a name, the left slot is for the input, and the right slot is for the output. Not all functions need parameters or return types, if not, the empty parameter is an empty set of parenthesis and return type is nothing more than an opening brace after the return type. I hope this helps!