关于“不能实例化抽象类”的更多信息 [英] More information on "cannot instantiate abstract class"

问题描述

有时我使用相对复杂的（有时令人困惑的 - 他们由原来编写的人的方式）抽象类。当继承它时，我有时会遇到不能实例化抽象类，并且大部分时间是因为我忘了声明&实现纯虚函数。我可以从编译器获得更多的信息，它发现我没有实现，而不是寻找它的函数？

Sometimes I am working with relatively complex (and sometimes confusing - with the way they are laid out by whoever wrote it originally) abstract classes. When inheriting from it, I sometimes encounter cannot instantiate abstract class and most of the time it is because I forgot to declare & implement a pure virtual function. Can I get more information from the compiler about which function it found I did not implement instead of hunting for it?

推荐答案

使用Visual Studio？如果是，请从错误列表选项卡切换到输出选项卡。将会有类似：

Are you using Visual Studio? If so, then switch from Error List tab to Output tab. There will be something like:

main.cpp(8): error C2259: 'foo' : cannot instantiate abstract class
          due to following members:
          'void Foo::method(char)' : is abstract

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