Syntax problems

[Jay03]

void ObjectRoot::runUpdateHandlers( ObjectRootPtr obj, const RTI::AttributeHandleValuePairSet& theAttributes ) { if (obj) { for (unsigned int i=0; i < ObjectRoot::ms_numUpdateHandlers; i++) { if (ObjectRoot::ms_updateHandlers[i]) { (*ms_updateHandlers[i])(obj, theAttributes); } } } } I don't understand what the code highlighted in brown does....... I am a beginner... please help me out Thanks

[Rage]

ms_updateHandlers is a function pointer array, e.g. an array of pointers that point on functions. (*ms_updateHandlers[i]) points on function number i in the array. (obj, theAttributes) are the parameters of the function. So (*ms_updateHandlers[i])(obj, theAttributes); is a function call of function number i in the ms_updateHandlers array, with parameters obj and the Attributes.

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

[Jay03]

Hey Rage, thanks for the reply What if you had a situation where you had two functions of the same parameters (obj, theAttributes). How does the pointer know which function to point to?

Rage wrote:

(*ms_updateHandlers[i]) points on function number i in the array.

I thought ms_updateHandlers is an array of pointers therefore i is a pointer number Thanks

[led mike]

Jay03 wrote:

How does the pointer know which function to point to?

http://www.informit.com/guides/content.asp?g=cplusplus&seqNum=140&rl=1[^]

led mike

[Hamid Taebi]

See A TUTORIAL ON POINTERS AND ARRAYS IN C [^] maybe it is some helpful to you

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WhiteSky

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