Calculator_Switch Java基础

Question

您好，我试过计算器的语法，使用字符作为操作数但结果总是错误。我正在使用日食（Luna）。上面没有错误或警告消息。

Syntax

    Scanner in = new Scanner(System.in);
    int answer = 0;
    System.out.println("Enter a number:");
    int num1 = in.nextInt();
    System.out.println("Enter another number:");
    int num2 = in.nextInt();
    System.out.println("Enter the operand:");
    char input =(char) in.nextInt();
    switch (input){
    case'*':
        answer = num1 * num2;
        break;
    case '/':
        answer = num1/num2;
        break;
    case '%':
        answer = num1%num2;
        break;
    case '+':
        answer = num1 +num2;
        break;
    case '-':
        answer = num1-num2;
        break;
    default:
        System.out.println("Invalid Command");
    }
    System.out.println("The result is: " + answer);

Debugging

输入数字，另一个数字和一个操作数：

和错误：

输入不匹配异常

Answer 1

只需更改此行：char input =(char) in.nextInt(); 为此 char input = in.next().charAt(0)...您就可以开始了！

Calculator_Switch Java基础

Calculator_Switch JavaFundamental

java

eclipse

calculator

switch-statement