实现加减乘除的简单计算器

package method;

import java.util.Scanner;

public class Demo06 {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        //无限for循环
        for(;;) {
            System.out.println("输入两个数：");
            int a=scanner.nextInt();
            int b=scanner.nextInt();
                  //输入字符
            char c=scanner.next().charAt(0);
            char d=c;
            switch (d) {
                case '+':
                    add(a, b);
                    System.out.println(a + b);
                    break;
                case '-':
                    dim(a, b);
                    System.out.println(a - b);
                    break;
                case '*':
                    mul(a, b);
                    System.out.println(a * b);
                    break;
                case '/':
                    div(a, b);
                    System.out.println(a / b);
                    break;
            }
        }

    }
    //加法方法
    public static int add(int a,int b){
        return a+b;
    }
    //减法方法
    public static int dim(int a,int b){
       return a-b;
    }
    //乘法方法
    public static int mul(int a,int b){
        return a*b;
    }
    //除法方法
    public static int div(int a,int b){
        return a/b;
    }

}