class Triangle {
var base:Int
var height:Int
var color:String = "red" // デフォルトイニシャライザ
// イニシャライザ
init(base:Int, height:Int) {
self.base = base
self.height = height
}
func area() {
print(base * height / 2)
}
func sayColor() {
print(color)
}
}
let triangle = Triangle(base: 2, height: 3)
triangle.area()
triangle.sayColor()