class TestScope5 constructor() {
    var name: String = "taro"
    var age: Int = 30
    // Unit: 返し値 がないことを示す.
    fun introduce(name: String, age: Int): Unit {
        this.name = name
        this.age = age
        println("${this.name}、${this.age}歳です")
    }
}

fun main() {
    val testScope5: TestScope5 = TestScope5()
    testScope5.introduce("jiro", 40)
}