where to declare structures, inside main() or outside main()?

Question

Case 1: structure declared outside main() working fine

#include
#include
struct prod
{
    int price,         


        

Answer 1

where to declare structures, inside main() or outside main()?

1. First thing, I think you meant "define", not "declare".

2. Second, there is no rule as such, You can define wherever you want. It is all about the scope of the definition.

   • If you define the structure inside main(), the scope is limited to main() only. Any other function cannot see that definition and hence, cannot make use of that structure definition.

   • If you define the structure in a global scope, (i.e., outside main() or any other function, for that matter), that definition is available globally and all the functions can see and make use of the structure definition.