In C, Can a structure have member function, access specifier?

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

In C++ there is no difference between structure and class except members of a class are private by default and members of struct are public by default.

In C you can not define a function within a struct, though you can have a function pointer in a struct.

Comments

So, i think even though file name is .c or .cpp,
if we compile it through g++ then it consider it as cpp only, correct?