C ++：变量声明初始化顺序 [英] C++: variable declaration initialization order

问题描述

当我定义这样的一些变量：

  int a = pop（），b = pop c = pop（）; C ++保证 a 是
  

首先要初始化，然后 b ，然后 c ？

[dcl.decl] / 3表示

$ b $ b

-3-每个声明中的init-declarator单独分析，就像它在一个声明中一样。

这意味着你的代码被视为：

  int a = pop 
 int b = pop（）; 
 int c = pop（）; 
  

When I'm defining some variables like this:

int a = pop(), b = pop(), c = pop();

does C++ give a guarantee that a is going to be initialized first, then b and then c? or is the order not defined?

解决方案

[dcl.decl]/3 says

-3- Each init-declarator in a declaration is analyzed separately as if it was in a declaration by itself.

Which means your code is treated like:

int a = pop();
int b = pop();
int c = pop();

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