运算符（较为基础，基础篇）（一）

package com.example.运算符;
public class demo1 {
    public static void main(String[] args) {
        System.out.println(5/2);//返回整数 除 2
        System.out.println(5%2);//返回整数 余数 1
        //i++  ++i
        int i=10;
        ++i;
        System.out.println(i);
        i++;
        System.out.println(i);
        //++f 先自增，后运算
        int f=10;
        System.out.println(++f +10);
        System.out.println(f);
        //d++ 先运算，后自增
        int d =10;
        System.out.println(d++ +10);
        System.out.println(d);
    }
}

2
1
11
12
21
11
20
11
Process finished with exit code 0

public static void main(String[] args) {
        int score =70;
        System.out.println(score >=60);
        System.out.println(score ==100);
        System.out.println(score !=60);
    }

true
false
true

public static void main(String[] args) {
        int abc=1000;
        int b = 0;
        int b1 = 0;
       //代码前后代码
        b=b+abc; // b=b+1000
        b1+=abc; // b1+=1000;
        System.out.println(b);
        System.out.println(b1);
        System.out.println(b==b1);
    }

1000
1000
true