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iOS Swift Functions and Optionals Functions Function Return Types

Edwin Mhoy Silva Rifa
Edwin Mhoy Silva Rifa
2,631 Points
Posted by Edwin Mhoy Silva Rifa
Edwin Mhoy Silva Rifa
2,631 Points

Using the return type

I got the following assignment

Modify the definition of the function named greeting to return a String and replace the println statement with a return statement. The function should return a greeting. For example, if you pass in a string "Tom" then the return string would be: "Hello Tom".

2 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

the function currently looks like this

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

it does not return anything right now. we want to modify it so that it returns a string . we first need to add the return type to the function header by placing -> followed by the return type after the closing parenthesis

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

then we need to change the line that prints out the string, to simply return the string

func greeting(person: String) -> String {
    return "Hello \(person)"
}