基本运算符

package operator;

/**
 * @version: java version 1.8
 * @Author: Mr Theroux
 * @description:
 * @date: 2024-08-19 17:06
 */
public class Demo01 {
    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        int c = 25;
        int d = 30;

        System.out.println(a+b);
        System.out.println(a-b);
        System.out.println(a*b);
        System.out.println(a/b);
        System.out.println(a/(double)b);
    }
}

package operator;

/**
 * @version: java version 1.8
 * @Author: Mr Theroux
 * @description:
 * @date: 2024-08-19 17:08
 */
public class Demo02 {
 public static void main(String[] args) {
  long a = 12312313121L;
  int b = 17;
  short c= 10;
  byte d = 2;
  System.out.println(a+b+c+d);//long
  System.out.println(b+c+d);//int
  System.out.println(c+d);//int
 }
}

package operator;

/**
 * @version: java version 1.8
 * @Author: Mr Theroux
 * @description:
 * @date: 2024-08-19 17:15
 */
public class Demo03 {
    public static void main(String[] args) {
        //关系运算符返回的结果只有正确和错误 true false
        //if接合
        int a = 10;
        int b = 20;
        int c = 30;
        System.out.println(c%b);
        System.out.println(a>b);
        System.out.println(a<b);
        System.out.println(a==b);
        System.out.println(a!=b);
    }
}