基本语法-运算符-算术运算符

算术运算符

【典型代码】

1.除运算：/

int num1 = 12;
int num2 = 5;
int result = num1 / num2;
System.out.println(result);//2

2.取余运算：%

int m1 = 12;
int n1 = 5;
System.out,println("m1 % n1 = " + m1 % n1);

int m2 = -12;
int n2 = 5;
System.out,println("m2 % n2 = " + m2 % n2);

int m3 = 12;
int n3 = -5;
System.out,println("m3 % n3 = " + m3 % n3);

int m4 = -12;
int n4 = -5;
System.out,println("m4 % n4 = " + m4 % n4);

3.（前）++：先自增1，后运算 |（后）++：先运算，后自增1

int a1 = 10；
int b1 = ++a1;
System.out.println("a1 = " + a1 + ",b1 = " + b1);

int a2 = 10；
int b2 = a2++;
System.out.println("a2 = " + a2 + ",b2 = " + b2);

int a3 = 10;
++a3;//a3++;
int b3 = a3;

4.（前）--：先自减1，后运算 |（后）--：先运算，后自减1

int a4 = 10;
int b4 = a4--;//int b4 = --a4;
System.out.println("a4 = " + a4 + ",b4 = " + b4);

【特别说明】

1.(前)++：先自增1，后运算 | (后)++：先运算，后自增1

2.(前)--：先自减1，后运算 | (后)--：先运算，后自减1

3.连接符：“+”，只在String与其他数据类型变量之间使用时，才表示是连接符。

基本语法-运算符-算术运算符

原文：https://www.cnblogs.com/xiaolinischengxuyuan/p/14888964.html