//声明类
public class Calculator {

public int ope(int op,int num1,int num2) {


int a =op + num1;
System.out.println("***运算结果为"+a);
int b= op-num1;
System.out.println("***运算结果为"+b);
int c=op*num1;
System.out.println("***运算结果为"+c);
int d=op/num1;
System.out.println("***运算结果为"+d);
num2=a+b+c+d;

return num2;
}

//测试类

import java.util.Scanner;

public class Tse1 {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
Calculator shuc=new Calculator();
System.out.println("请输入运算:(1.加法2.减法3.乘法4.除法)");
int num2=input.nextInt();
System.out.println("请输入第一个数字:");
int op=input.nextInt();
System.out.println("请输入第二个数字:");
int num=input.nextInt();
switch(op){
case 1:
int a=op+num;
System.out.println("***运算结果为"+a);
break;
case 2:
int b=op-num;
System.out.println("***运算结果为"+b);
break;
case 3:
int c=op*num;
System.out.println("***运算结果为"+c);
break;
case 4:
int d=op/num;
System.out.println("***运算结果为"+d);
break;
default:
System.out.println("输入错误");
break;

}



}

}

java第14章简答题课后作业