#include <stdio.h>

/* ------------------------
   Structure definition
   ------------------------ */
struct BankAccount
{
   int    ID;
   double balance;
};

struct BankAccount a;

int main(int argc, char *argv[])
{
   struct BankAccount b;

   a.ID  = 123;
   a.balance = 1000.0;

   b.ID  = 444;
   b.balance = 3000.0;

   printf("a = (%d, %f)\n", a.ID, a.balance);   
   printf("b = (%d, %f)\n\n", b.ID, b.balance);

   /* ========================
      Copy struct
      ======================== */
   b = a;

   printf("a = (%d, %f)\n", a.ID, a.balance);   
   printf("b = (%d, %f)\n\n", b.ID, b.balance);

   /* ============================================
      Proof that a and b are different objects
      ============================================ */
   a.balance = 999999.0;

   printf("a = (%d, %f)\n", a.ID, a.balance);   
   printf("b = (%d, %f)\n\n", b.ID, b.balance);
}