参见英文答案 > Representing big numbers in source code for readability?                                    5个
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想象一下,我有代码：

vector<int> temp = vector<int>(1 000 000 000);

上面不会编译,因为编译器会抱怨空格.是否可以指示C在编译时省略这些空格,或以其他方式使数字更容易阅读？

解决方法:

尝试数字分隔符：

int i = 1'000'000'000;

此功能在since C++14中引入.它使用单引号(‘)作为数字分隔符.

另见：

> Why was the space character not chosen for C++14 digit separators?
> Generalizing Overloading for C++2000(四月由C的父亲自己开玩笑)