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iOS Swift 2.0 Functions Function Parameters Returning Complex Values

Aditya Gawade
Aditya Gawade
1,182 Points

this is the best i could come up with. can u please point out what is wrong and what concept am i lacking?

For this challenge, let's say we're building a component of an app that allows a user to type in a location of a famous landmark and get back the geographical coordinates. To keep the scope limited, let's say we're only working with the following values. Eiffel Tower - lat: 48.8582, lon: 2.2945 Great Pyramid - lat: 29.9792, lon: 31.1344 Sydney Opera House - lat: 33.8587, lon: 151.2140 Declare a function named getTowerCoordinates that takes a single parameter of type String, named location, and returns a tuple containing two Double values (Note: You do not have to name the return values) Use a switch statement to switch on the string passed in to return the right set of coordinate values for the location. For example, if I use your function and pass in the string "Eiffel Tower" as an argument, I should get (48.8582, 2.2945) as the value. For the default case in the switch statement, return (0,0).

I GOT ALL THESE ERRORS :(

swift_lint.swift:6:14: error: expected ':' after 'case' case Eiffel Tower : print" lat: 48.8582, lon: 2.2945 " ^ swift_lint.swift:6:19: error: consecutive statements on a line must be separated by ';' case Eiffel Tower : print" lat: 48.8582, lon: 2.2945 " ^ ; swift_lint.swift:6:20: error: expected expression case Eiffel Tower : print" lat: 48.8582, lon: 2.2945 " ^ swift_lint.swift:7:13: error: expected ':' after 'case' case Great Pyramid : print"lat: 29.9792, lon: 31.1344 " ^ swift_lint.swift:7:20: error: consecutive statements on a line must be separated by ';' case Great Pyramid : print"lat: 29.9792, lon: 31.1344 " ^ ; swift_lint.swift:7:21: error: expected expression case Great Pyramid : print"lat: 29.9792, lon: 31.1344 " ^ swift_lint.swift:8:14: error: expected ':' after 'case' case Sydney Opera House : print"lat: 33.8587, lon: 151.2140" ^ swift_lint.swift:8:19: error: consecutive statements on a line must be separated by ';' case Sydney Opera House : print"lat: 33.8587, lon: 151.2140" ^ ; swift_lint.swift:8:25: error: consecutive statements on a line must be separated by ';' case Sydney Opera House : print"lat: 33.8587, lon: 151.2140" ^ ; swift_lint.swift:8:26: error: expected expression case Sydney Opera House : print"lat: 33.8587, lon: 151.2140" ^ swift_lint.swift:6:7: error: use of unresolved identifier 'Eiffel' case Eiffel Tower : print" lat: 48.8582, lon: 2.2945 " ^~~~~~ swift_lint.swift:6:14: error: use of unresolved identifier 'Tower' case Eiffel Tower : print" lat: 48.8582, lon: 2.2945 " ^~~~~ swift_lint.swift:7:7: error: use of unresolved identifier 'Great' case Great Pyramid : print"lat: 29.9792, lon: 31.1344 " ^~~~~ swift_lint.swift:7:13: error: use of unresolved identifier 'Pyramid' case Great Pyramid : print"lat: 29.9792, lon: 31.1344 " ^~~~~~~ swift_lint.swift:8:7: error: use of unresolved identifier 'Sydney' case Sydney Opera House : print"lat: 33.8587, lon: 151.2140" ^~~~~~ swift_lint.swift:8:14: error: use of unresolved identifier 'Opera' case Sydney Opera House : print"lat: 33.8587, lon: 151.2140" ^~~~~ swift_lint.swift:8:20: error: use of unresolved identifier 'House' case Sydney Opera House : print"lat: 33.8587, lon: 151.2140" ^~~~~

functions.swift
// Enter your codbelow
func getTowerCoordinates(location: String) -> (Double, Double) {
switch location {
 case Eiffel Tower : print" lat: 48.8582, lon: 2.2945 " 
 case Great Pyramid : print"lat: 29.9792, lon: 31.1344 "
 case Sydney Opera House : print"lat: 33.8587, lon: 151.2140"
 default: "0,0"
 }
} 

2 Answers

David Lin
David Lin
35,864 Points

A couple things:

  1. location is a string, so you need to enclose double-quotes in your location cases.
  2. return a tuple of values, not print them out
// Enter your code below
func getTowerCoordinates(location: String) -> (Double, Double) {
switch location {
 case "Eiffel Tower": return (48.8582, 2.2945) 
 case "Great Pyramid": return(29.9792, 31.1344)
 case "Sydney Opera House": return(33.8587, 151.2140)
 default: return(0,0)
 }
}