Can we use storage class specifier for the function arguments or if there is a default storage for the same ?

Question

I have written a simple program and stored it with .c file,
When i compiled it with g++ it is getting compiled and giving the proper output when i run that,
but when i compile the same using gcc then it is throwing error.

Below is the sample .c file
#include<stdio.h>
struct A{
        private:
        int a;
        public:
        int sum(){
        a=10;
        }
        void print()
        {
        printf("%d\n",a);
        }
        A()
        {
                printf("Constructor\n");
        }
        A(int b)
        {
                printf("Copy Constructor\n");
        }
        ~A()
        {
                printf("Destructor\n");
        }
};
main()
{
        struct A a(10);
        a.sum();
        a.print();
}

Answer 1

Yes, of course we can use storage class specifier for the function.
By default function has an EXTERN storage class.

Comments

For function we can use them but the question is, if we can use them for the function 'arguments' or not.

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As far as i know, we can not specify storage class for the function argument.
by default the storage class of function argument is REGISTER.