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iOS Development Techdegree Student 1,596 Pointswhy is this not right?
why is it not compiling?
class Point {
var x: Int
var y: Int
init(x: Int, y: Int) {
self.x = x
self.y = y
}
}
class Machine: Point {
var location: Point
init() {
self.location = Point(x: 0, y: 0)
super.init(x:0 , y:0)
}
func move(_ direction: String) {
print("Do nothing! I am a machine!")
}
}
// Enter your code below
class Robot: Machine {
override func move(_ direction: String) {
switch direction {
case "Up" :
location.y += 1
case "Down" :
location.y -= 1
case "left" :
location.x -= 1
case "Right":
location.x += 1
default :
break
}
}
}
let rob1 = Robot()
rob1.move(_ : "Up")
1 Answer
Matthew Long
28,407 PointsYour Robot class is correct except one of the cases in your switch statement is looking at left
instead of Left
. Just change that and you're good.
class Robot: Machine {
override func move(_ direction: String) {
switch direction {
case "Up": location.y += 1
case "Down": location.y -= 1
case "Left": location.x -= 1
case "Right": location.x += 1
default: break
}
}
}