package com.direct.demo;

import java.text.DecimalFormat;

import java.util.Scanner;

public class Calculator {

	/**

	 * @param args

	 */

	private int num1;

	private int num2;

	public Calculator(int num1, int num2) {

		super();

		this.num1 = num1;

		this.num2 = num2;

	}

	public void add(){

		double num = num1+num2;

		System.out.println("结果："+num);

	}

	public void subtraction(){

		double num = num1-num2;

		System.out.println("结果："+num);

	}

	public void mutleplication(){

		double num = num1*num2;

		System.out.println("结果："+num);

	}

	public void division(){

		String num = "0.00";

		if(num1%num2==0){

			int num3 = 0;

			if(num2 ==  0){

				System.out.println("除数不能为零");

			}else{

				  num3 = num1/num2 ;

				 num = Integer.valueOf(num3).toString();

			}

		}else {

			DecimalFormat dFormat = new DecimalFormat("0.00");

			if(num2 ==  0){

				System.out.println("除数不能为零");

			}else{

				num =  dFormat.format((float)num1/num2) ;

			}

		}

		System.out.println("结果："+num);

	}

	public static void main(String[] args) {

		Calculator ca = new Calculator(40,55);

		ca.division();

	}

}