如何使用 C 对继承进行建模? [英] How can Inheritance be modelled using C?

问题描述

是否可以使用 C 对继承进行建模?如何?示例代码会有所帮助.

Is it possible to model inheritance using C? How? Sample code will help.

我希望继承数据和方法.仅靠集装箱船是无济于事的.可替代性——使用任何基类对象可以工作的派生类对象——正是我所需要的.

I am looking to inherit both data and methods. Containership alone will not help. Substitutability - using any derived class object where a base class object works - is what I need.

推荐答案

这样做很简单:

struct parent {
    int  foo;
    char *bar;
};

struct child {
    struct parent base;
    int bar;
};

struct child derived;

derived.bar = 1;
derived.base.foo = 2;

但是如果你使用 MS 扩展(在 GCC 中使用 -fms-extensions 标志)你可以使用匿名嵌套的 structs，它看起来会更好:

But if you use MS extension (in GCC use -fms-extensions flag) you can use anonymous nested structs and it will look much better:

struct child {
    struct parent;    // anonymous nested struct
    int bar;
};

struct child derived;

derived.bar = 1;
derived.foo = 2;     // now it is flat

这篇关于如何使用 C 对继承进行建模?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！