Thread: Can anyone explain this

Code:

char g[10]; /*ten bytes*/

int main()
{
  struct g { 
             int a;
           };
  
  printf("g is supposed to be (4)sizeof(a) %d",g);
  return 0;
}
Output display g = 10.

Do you guys know why it output the sizeof g is
equal to 10 instead of 4?
This code was compiled with GCC compiler.
Can anyone explain concisely about this??
Thanx!
P.S:
As I know in C if the local variable is the same
name with global variable then that name become
locally access in the scope where it define.
For ex:
int a=1;
void fun()
{ int a=10;
int b;
printf("a value should be (10): %d",a);
}
int main()
{
fun();
return 0;
}