如何使用强制转换运算符

Question

我目前正在处理作业中的一个问题。问题是：

"Write a program that prompts the user to input an integer between 0 and 35. If the number is less than or equal to 9, the program should output the number; otherwise, it should output A for 10, B for 11, C for 12, ..., and Z for 35. (Hint: Use the cast operator, static_cast() for numbers >= 10."

我不知道如何使用强制转换运算符，我需要一些指导。

这是我的代码：

import java.util.Scanner;
public class Question_4 {
public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    int integer = 0;

    System.out.println("Enter a number between 0 - 35: ");
    integer = sc.nextInt();

    if(integer <= 9){
        System.out.println("Number entered is " + integer);
    }
    else{

        System.out.println(static_cast.class<char>('A' + (integer - 
                                                            10)););
    }
}//END Main
}

Answer 1

你可以这样做：

System.out.println((char)((byte)'A' + (integer - 10)) );

(byte)'A' 将给出 'A' char (97)
(char) 将数字转换回字符

如何使用强制转换运算符

How to use cast operator

java

typecast-operator