C / C++ / MFC

George_George wrote:

I do not understand how this statement works,

(Foo( &counter ), counter);

George_George wrote:

I have tested that the simple statement (without comment) also works.

George_George wrote:

What is the benefit and function to add , and counter in macro definition?

void Foo (int* input)
{
	*input = 100;

	return;
}

#define GETFOO  (Foo( &counter ), counter)
void main()
{
int i = GETFOO;
}

toxcct wrote:

I gave you 5 everywhere in this thread, so did I to Iian

toxcct wrote:

answering George_george deserve courage and patience !!!

CPallini wrote:

OMG, definitely you aren't my friend!

CPallini wrote:

Only 5?

toxcct wrote:

BTW, please do the same to me

George_George wrote:

I do not agree with your answer

George_George wrote:

Thanks toxcct,

main ()
{
   int q = GETFOO;
   return 0;
}

int q = Foo(&counter), counter;

int q;
Foo (&counter);
q = counter;

for (a = 0, b = 7; a < 9; a++, b++)
{
   ...
}

Iain Clarke wrote:

The main place I see it is in for loops:


for (a = 0, b = 7; a < 9; a++, b++)
{
...
}

int i,j,k;

George_George wrote:

So, no benefits of using , operator, right?

#define GETFOO (Foo(&counter), counter)
 
void Foo(int* i) {
    &i = 100;
}
 
void main() {
    int counter;
    int i2 = GETFOO;
}

void main() {
    int counter;
    int i2 = (GETFOO * 5);
}

George_George wrote:

My question is answered.

Cedric Moonen wrote:

Geez, why did you get down voted on that one ?