有没有一种方法可以在C ++源代码中编写大量带有空格的内容，以使其更具可读性? [英] Is there a way to write a large number in C++ source code with spaces to make it more readable?

问题描述

想象一下我的代码:

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

以上内容将不会编译，因为编译器将抱怨空格.是否有可能在编译时指示C ++忽略那些空格，或者使数字更易于阅读?

The above will not compile as the compiler will complain about the spaces. Is it possible to indicate to C++ to ommit those spaces when compiling, or otherwise make the number easier to read?

推荐答案

尝试数字分隔符:

int i = 1'000'000'000;

C ++ 14起引入了此功能.它使用单引号(')作为数字分隔符.

This feature is introduced since C++14. It uses single quote (') as digit separator.

另请参阅:

• 为什么未为C ++ 14数字分隔符选择空格字符?
• 通用化C ++ 2000的重载(C ++的父亲本人在4月开玩笑)

• Why was the space character not chosen for C++14 digit separators?
• Generalizing Overloading for C++2000 (April's joke by the father of C++ himself)

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