class Person {
// define two properties
var name: String = ""
var age: Int = 0
}
var person1 = Person()
// assign values to properties
person1.name = "Kevin"
person1.age = 42
// access properties
print("Name:", person1.name)
print("Age:", person1.age)
class Person {
// define properties
var name: String = ""
var age: Int = 0
...
}