静态存储在内存中的全局变量在哪里？

Question

In C,the global variables are stored in data segment.But I have no clue where will static variables which are global get stored?

static int num;   //where will this variable get stored in memory?
int main(){
   //code 

}    

Answer 1

There are various places these variables may be stored, the standard does not mandate any particular storage location. Depending on situation they may even be stored in read-only memory (if not modified) or not at all (if not used). It is even not required that the location need to be fixed (or single).

The only requirement the standard puts regarding storage is that the variable has to keep it's value across function calls.

However a normal approach would be to place these together with the global variables. The only thing that differs static variables from global are the scope of the symbols. However note that this is only one possibility and I can imagine other reasonable solutions.

To get a more precise answer you need to know what platform and toolchain you are using.

Answer 2

它们存储在内存的数据段中。