借过。

     int result = 0;        System.out.println("请输入一个整数：");        Scanner numInput = new Scanner(System.in);        int num1 = numInput.nextInt();        System.out.println("请再输入一个整数：");        Scanner numInput1 = new Scanner(System.in);        int num2 = numInput1.nextInt();        System.out.println("请输入一个算数运算符：");        Scanner operationInput = new Scanner(System.in);        char op = operationInput.next().charAt(0);                switch (op)        {            case '+':                result = num1 + num2;                break;            case '-':                result = num1 - num2;                break;            case '/':                result = num1 / num2;                break;            case '*':                result = num1 * num2;                break;            default:                System.out.println("参数输入错误！");                return;        }                System.out.println("计算结果为：" + result);

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