键盘输入简单数值和符号求运算结果

//Cal.java
import java.util.Scanner;
public class Cal{
public static void main(String[] args){
System.out.println("请输入两个整数：");
Scanner jingle=new Scanner(System.in);
int numX=jingle.nextInt();
int numY=jingle.nextInt();
System.out.println("请输入一个运算符号：");
char op=jingle.next().charAt(0);
double result=0.0;
switch(op){
case '+':result=numX+numY;System.out.println(numX+""+op+numY+"="+result);break;
case '-':result=numX-numY;System.out.println(numX+""+op+numY+"="+result);break;
case '*':result=numX*numY;System.out.println(numX+""+op+numY+"="+result);break;
case '/':result=numX/numY;System.out.println(numX+""+op+numY+"="+result);break;
case '%':result=numX%numY;System.out.println(numX+""+op+numY+"="+result);break;
default:System.out.println("输入非法符号");
}
//System.out.println(numX+""+op+numY+"="+result);
}
}