【狂神说Java】Java零基础学习视频通俗易懂

你好，这里是关于简易计算器的JAVA代码

import java.util.Scanner;

/**

 * @author chatGPT

 */

public class SimpleCalculator {

  public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);

    System.out.print("请输入第一个数：");

    double num1 = scanner.nextDouble();

    System.out.print("请输入第二个数：");

    double num2 = scanner.nextDouble();

    System.out.print("请选择要进行的操作：\n1.加\n2.减\n3.乘\n4.除\n");

    int choice = scanner.nextInt();

    switch (choice) {

      case 1:

        System.out.println(num1 + " + " + num2 + " = " + (num1 + num2));

        break;

      case 2:

        System.out.println(num1 + " - " + num2 + " = " + (num1 - num2));

        break;

      case 3:

        System.out.println(num1 + " * " + num2 + " = " + (num1 * num2));

        break;

      case 4:

        if (num2 == 0) {

          System.out.println("除数不能为0！");

        } else {

          System.out.println(num1 + " / " + num2 + " = " + (num1 / num2));

        }

        break;

      default:

        System.out.println("无效的操作！");

    }

    scanner.close();

  }

}