if

object HelloWorld {
  def main(args: Array[String]): Unit = {
    println("你好,scala")
    print("请输入一个年份:")
    val year = scala.io.StdIn.readInt()
    val result:Boolean =  (year%4==0 && year%100 !=0) || (year%400 == 0);
    
    if(result) {
      println(s"$year 闰年")
    }
    
    
  }

}