This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Design question about global variable

Hello

Normall in an application we define global variable as:
int a;
int b;
...

How about use one structure to include all variables, and just define one structure instance? as below:
struct{ int a; int b; ...
}global;

Is the performance slower? does it take more code space? Is there any other drawback?

Thanks.

/Wang

Parents
  • Thank you to point out this possibility (but I would not recommend packing, unless really required - if you pack the structures and you have an uneven number of char's and short's in your structs, you will run into alignment problems - that's why I recommended to fill with "free" char's / short's).

Reply
  • Thank you to point out this possibility (but I would not recommend packing, unless really required - if you pack the structures and you have an uneven number of char's and short's in your structs, you will run into alignment problems - that's why I recommended to fill with "free" char's / short's).

Children
No data