JAVA四则运算

来源：互联网发布：网络公选课上课时间编辑：程序博客网时间：2024/06/05 09:39
public class chengfa {int mulity(int num1,int num2){return num1*num2;}}public class chufa {int del(int num1,int num2){return num1/num2;}}public class jiafa {int add(int num1,int num2){return num1+num2;}}public class jianfa {int jian(int num1,int num2){return num1-num2;}}import java.util.Scanner;public class test {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubint number=0;System.out.println("请输入两个数");Scanner reader=new Scanner(System.in);int a=reader.nextInt();int b=reader.nextInt();System.out.println("1.加法");System.out.println("2.减法");System.out.println("3.乘法");System.out.println("4.除法");System.out.println("请选择");Scanner reader1=new Scanner(System.in);number=reader.nextInt();switch(number){case 1:jiafa A=new jiafa();       System.out.println("和为:"+A.add(a, b));       break;case 2:jianfa B=new jianfa();System.out.println("差为:"+B.jian(a, b));break;case 3:chengfa C=new chengfa();System.out.println("乘积为:"+C.mulity(a, b));break;case 4:chufa D=new chufa();System.out.println("商为:"+D.del(a, b));break;default:System.out.println("输入有误");}}}
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