package cn.hfkh.oop.yichang02;

import java.util.InputMismatchException;
import java.util.Scanner;
import java.util.logging.Logger;
/**
 * 使用log4j进行日志输出
 *
 */
public class JiSuanQi02 {
	private static Logger logger = Logger.getLogger(JiSuanQi02.class.getName());
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		System.out.print("请选择算数算法:1.+ 2.- 3.* 4./ :  ");
		int num3=0;
		try {
			num3 = input.nextInt();
		} catch (InputMismatchException e1) {
			logger.info("请输入正确的数字！");
		}catch (Exception e1) {
			logger.info("其他未知异常。");

		}
		

		switch (num3) {
		case 1:
			try {
				System.out.println("请您输入第一个整数：");
				int num1 = input.nextInt();
				System.out.println("请您输入第二个整数：");
				int num2 = input.nextInt();
				System.out.println(String.format("%d + %d = %d",num1,num2,num1+num2));
				logger.info(String.format("%d + %d = %d", num1, num2, num1+ num2));
			} catch (InputMismatchException e) {
				System.err.println("两个加数都必须为整数！");
			}catch (Exception e) {
				System.err.println("其他未知异常。");
			} finally {
		          System.out.println("感谢使用本程序!");
		      }

			break;
		case 2:
			try {
				System.out.println("请您输入第一个整数：");
				int num1 = input.nextInt();
				System.out.println("请您输入第二个整数：");
				int num2 = input.nextInt();
				System.out.println(String.format("%d - %d = %d",num1,num2,num1-num2));
				logger.info(String.format("%d - %d = %d", num1, num2, num1- num2));
			} catch (InputMismatchException e) {
				logger.info("两个减数都必须为整数！");
			}catch (Exception e) {
				logger.info("其他未知异常。");
			}finally {
		          System.out.println("感谢使用本程序!");
		      }
			break;
		case 3:
			try {
				System.out.println("请您输入第一个整数：");
				int num1 = input.nextInt();
				System.out.println("请您输入第二个整数：");
				int num2 = input.nextInt();
				System.out.println(String.format("%d * %d = %d",num1,num2,num1*num2));
				logger.info(String.format("%d * %d = %d", num1, num2, num1* num2));
			} catch (InputMismatchException e) {
				logger.info("两个乘数都必须为整数！");
			}catch (Exception e) {
				logger.info("其他未知异常。");
			}finally {
		          System.out.println("感谢使用本程序!");
		      }
			break;
		case 4:
			try {
				System.out.println("请您输入第一个整数：");
				int num1 = input.nextInt();
				System.out.println("请您输入第二个整数：");
				int num2 = input.nextInt();
				System.out.println(String.format("%d / %d = %d",num1,num2,num1/num2));
				logger.info(String.format("%d / %d = %d", num1, num2, num1/ num2));
			} catch (InputMismatchException e) {
				logger.info("两个除数都必须为整数！");

			}catch (ArithmeticException e) {
				logger.info("除数不能为0。");

			}catch (Exception e) {
				logger.info("其他未知异常。");

			}finally {
		          System.out.println("感谢使用本程序!");
		      }
			break;
			
		


		}

	}

}