为什么在卷曲的支架后不需要分号？ [英] Why semicolon is not required after a curled bracket?

问题描述

我知道在声明（我正在谈论Java，C ++和类似语言）之后需要分号，但在卷曲括号之后不需要。为什么会这样？

I know that a semicolon is required after a statement (I'm talking about Java, C++, and similar languages), but is not required after a curled bracket. Why so?

if (a > b) 
  printf("hello!"); // semicolon is mandatory

if (a > b) {
  printf("hello!");
} // semicolon is not required

这是什么原因？我的意思是，这背后的理论是什么？

What is the reason? I mean, what is the theory behind this?

推荐答案

因为花括号用于分组语句，但它们本身不是语句。

Because curly brackets are used for grouping statements, but they are not statements themselves.

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