5、Scala 控制结构与运算符全解析

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于 2025-07-13 11:32:40 发布

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分类专栏：探索Scala编程：从基础到实践文章标签： Scala 控制结构运算符

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Scala 控制结构与运算符全解析

1. 条件表达式与正差值计算

在 Scala 中，条件表达式是常用的控制结构之一。以下代码展示了如何计算两个数的正差值：

import scala.io.StdIn._
object PositiveDifference {
  def main(args: Array[String]): Unit = {
    var positiveDiff = 0
    val executeFlag = true
    print("Please enter first number: ")
    val firstNumber = readInt()
    print("Please enter second number: ")
    val secondNumber = readInt()
    if((executeFlag == true) && (firstNumber - secondNumber) > 0) {
      positiveDiff = firstNumber - secondNumber
      println("The positive difference: "+positiveDiff)
    } else if((executeFlag == true) && (secondNumber - firstNumber) > 0) {
      positiveDiff = secondNumber - firstNumber
      println("The positive difference: "+