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Pointer to function returning void


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#1 Misery   Members   -  Reputation: 317

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Posted 22 January 2012 - 04:12 PM

Hi there,

I am trying to make a function taking as one argument another function. This passed function is of type:

void SomeFunc(int blabla)
{
//do something
}


How do I define properly this function to which I pass the mentioned one? Is this fine?
SomeRetValuetype Func( void (AFunction(int)) )
{
	//do some stuff
   AFunction(someintvalue);
  //do some stuff
}

Is the example from above ok?
When I made this argument passing the way defined for other functions (as I did usually) I get a bunch of errors:
SomeRetValuetype Func( void (*AFunction(int)) )
{
	//do some stuff
   AFunction(someintvalue);
  //do some stuff
}

on GCC:

error: invalid conversion from 'void (*)(void*) {aka void (*)(void*)}' to 'void* (*)(void*)' [-fpermissive]|

Thanks in advance for any suggestions,
Misery

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#2 Necrolis   Members   -  Reputation: 1369

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Posted 22 January 2012 - 04:17 PM

its easier if you use a typedef:
typedef void (*myfunc_t)(int);

SomeRetValuetype Func( myfunc_t fp )
{
    fp(1);
}

or if you want to do it inline:

SomeRetValuetype Func( void (*fp)(int) )
{
    fp(1);
}


#3 Misery   Members   -  Reputation: 317

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Posted 23 January 2012 - 12:34 AM

thanks,
I see the mistake: brackets were placed incorectly :-p




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