• Saaa (4/4) Feb 20 2008 How are global variables accessed?
• Steven Schveighoffer (5/9) Feb 20 2008 All usage of global variables reference the same data. If you want a co...
• Saaa (2/7) Feb 20 2008

"Saaa" <empty needmail.com> writes:

How are global variables accessed?

If a function wants to read/write to one, will it get a reference to it or a 
copy?

(I should learn asm :) 

"Steven Schveighoffer" <schveiguy yahoo.com> writes:

"Saaa" wrote
 How are global variables accessed?

 If a function wants to read/write to one, will it get a reference to it or 
 a copy?

 (I should learn asm :)

All usage of global variables reference the same data.  If you want a copy, 
declare a local variable and copy the value of the global to the local 
variable.

-Steve 

"Saaa" <empty needmail.com> writes:

Ok, thanks.
Using global variables isn't a performance penalty then.

 All usage of global variables reference the same data.  If you want a 
 copy, declare a local variable and copy the value of the global to the 
 local variable.

 -Steve