使用java语言编写简易计算器



ackage counter;

import java.util.Scanner;

public class test {

 public static void main(String[] args) {
  try {
   Scanner input = new Scanner(System.in);
   System.out.print("请输入第一个数字：");
   double nuber1 = input.nextDouble();
   System.out.print("请输入第二个数字：");
   double nuber2 = input.nextDouble();
   System.out.print("请输入运算符：（+、-、*、/）");
   String oprate=input.next();

   double result = 0;
   switch (oprate) {
   case "+":
    result = nuber1 + nuber2;
    break;
   case "-":
    result = nuber1 - nuber2;
    break;
   case "*":
    result = nuber1 * nuber2;
    break;
   case "/":
    if (nuber2 == 0) {
     System.out.print("除数不能为0");
    } else {
     result = nuber1 / nuber2;
    }

    break;

   
   }
   System.out.print("结果是：" + result);
  } catch (Exception e) {
   System.out.println("输入有误");
  }

 }

}