的问题:和 [英] a Question of : and ,

问题描述

你好.
在此函数中:"和，"的作用是什么?

Hello.
what is the role of ":" and "," on this function?

GameTime(const log & c, const log & s) : M_cycle(c), M_stopped(s)

推荐答案

它们只是C ++ constructor initializer list的语法标记，例如，参见: [

They are simply syntax tokens of the C++ constructor initializer list, see, for instance: "Initializing base classes and members"[^].

多重继承
在C ++中，一个类完全有可能从多个类中继承成员.这是通过在派生类声明中简单地用逗号分隔不同的基类来完成的.例如，如果我们有一个要在屏幕上打印的特定类(COutput)，并且我们希望我们的类CRectangle和CTriangle除了CPolygon的成员之外还继承其成员，我们可以这样写:

Multiple inheritance
In C++ it is perfectly possible that a class inherits members from more than one class. This is done by simply separating the different base classes with commas in the derived class declaration. For example, if we had a specific class to print on screen (COutput) and we wanted our classes CRectangle and CTriangle to also inherit its members in addition to those of CPolygon we could write:

class CRectangle: public CPolygon, public COutput;
class CTriangle: public CPolygon, public COutput;

从外部引用"

所以，

:" 表示GameTime继承了M_cycle和(，" )M_stopped ...

P.S.您个人资料中的美国国旗是什么意思???只是出于好奇...

解决方案1可能是您所追求的，因为我在考虑类，并且您清楚地表明它是函数..

"quoted from outside source"

So ,

":" means that GameTime inherits M_cycle and (",") M_stopped ...

P.S. What does US flag in Your profile means ??? Just out of curiosity ...

Edit : Solution 1 is probably what You are after, as I was thinkin of classes and You stated clearly it was the function ..

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