Re: newbie: Packed bitspecs?
On 17 mai, 03:20, oicci...@twcny.rr.com wrote:
Is there a way to do the following code so that
day_data and other_data_1 occupy the same byte in
memory? Using the debugger, the addresses I'm getting are:
12ff5c - myVar.day_data
12ff60 - myVar.other_data_1
I'm using Microsoft Visual C++. sizeof(unsigned short) returns 2.
enum DAY {SUN,MON,TUE,WED,THUR,FRI,SAT};
class myClass
{
public:
DAY day_data : 3;
unsigned short other_data_1 : 5;
unsigned short other_data_2 : 8;};
Not sure what you're trying to do, but bit fields don't have
addresses, so who knows what the debugger is showing you. And
how the compiler lays out bit fields is implementation defined,
so the above could be anything. If you're trying to match an
external format, you'll have to use shifting and masking.
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