espepe 
Hi,
i deal with a atmega32 and I write the program in C.
I want to make a function which has multiple returns. I solve the problem like this:
void foo(int16_t &a, int16_t &b) {
a+=0x3211;
b+=a;
return;
}
Using other C compilers (like Dev-C++) this kind of solution works, but the AVR studio has an error, it expects a ';' or ',' or ')' before the '&'. Has anybody any idea how to solve this problem, or any advive how to deal with multiple returns?
thanks
clawson 
You got that the wrong way round. The function should be:
void foo(int16_t * a, int16_t * b) {
*a+=0x3211;
*b+=*a;
return;
}
then call it with:
foo(&a_to_be_updated, &b_to_be_updated);
The idea being that you pass the address-of the variables to be updated and then you use the values that 'a' and 'b' are "pointing at" in the function.
awit void foo(int16_t * a, int16_t * b)
isn't a valid construction in C, it's C++ construction.
In C multiple values can be returned by returning struct or, as wrote clawson, by passing to function pointers to vars which values may be changed.
Edit: This is valid quoted code:
void foo(int16_t &a, int16_t &b)
previous is wrong. My mistake. :oops:
Sorry
clawson
isn't a valid construction in C, it's C++ construction
He quoted the wrong function declaration. ;-)
I assume he rather wanted to quote the original declaration of the OP (which is in fact C++).
nicolaisi the post by awit is kind of confusing, but i do agree with what clawson had written. Cheers :D