bug:type_rich_api:fix bug of meter and kilometer #58
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关于第二点，太长时间不写面向对象都快忘了，是不是子类要有自己的构造函数，然后会自动调用父类的构造函数？ |
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子类不会自动调用父类构造函数，所有语言都是如此吧
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From: ***@***.***>
Date: Tue, Oct 22, 2024 10:57 AM
To: ***@***.***>;
Cc: ***@***.***>;
Subject: Re: [parallel101/cppguidebook] bug:type_rich_api:fix bug of meter andkilometer (PR #58)
关于第二点，太长时间不写面向对象都快忘了，是不是子类要有自己的构造函数，然后会自动调用父类的构造函数？
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archibate
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Oct 25, 2024
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因为C++特色，子类不会自动继承父类的构造函数（除非是没参数的默认构造函数）。
需要using 父类::父类;这样写一下，才能自动继承父类的构造函数。
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额外的，是这章节 md 文件中的
---让目录变得这么难看吗？