Question

怎编程实现迷你计算器功能：支持+、-、＊、/，从控制台输入两个操作数输出运算结果？

Answer 1

public static void main(String[] args) { // TODO Auto-generated method stub Scanner in=new Scanner(System.in); System.out.print

1. ("请输入第一个数：");

   int num1=in.nextInt();

   System.out.print

2. ("请输入第一个数：");

   int num2=in.nextInt();

   System.out.println

3. ("请选择算法：1.加2.减3.乘4.除");

   int xz=in.nextInt(); switch(xz){

   case 1: System.out.println

4. ("结果是："+(num1+num2));

   break; case 2: System.out.println

5. ("结果是："+(num1-num2));

   break; case 3:

   System.out.println

6. ("结果是："+(num1*num2));

   break;

   case 4: System.out.println

7. ("结果是："+(num1/num2)); break; } } }

Answer 2

不会呀→_→