运算符+ = vs = +之间有什么区别 [英] What is the difference between the operators += vs =+

问题描述

我刚刚意识到我正在使用= +而不是运算符+ =而我的程序正在做各种奇怪和意想不到的事情。 Eclipse没有给我任何类型的错误，所以我认为= +是一个合法的运算符，但在我的书中没有提到它。

I just realized that I was using =+ instead of the operator += and my program was doing all sorts of weird and unexpected things. Eclipse didn't give me an error of any kind so I assume that =+ is a legitimate operator but there is no reference to that in my book.

我的问题是= +做什么，如果有的话，在什么情况下你会使用它？

My question is what does =+ do if anything and under what circumstances would you use it?

推荐答案

 +=

添加AND赋值运算符，它将右操作数添加到左操作数并将结果赋给左操作数。

Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand.

示例：

 int i =1;
 int j=2;
 i += j;
 System.out.println(i);  //prints 3

= +与=

让我们举例说明

  int i =1;
  int j=2;

  i =+ j;
  System.out.println(i);  //prints 2 only 

不错的操作员指南。

这篇关于运算符+ = vs = +之间有什么区别的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！