#include <stdio.h>

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

struct BankAccount a;

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

   struct BankAccount *p;  // Reference variable to type "struct BankAccount"

   p = &a;                 // Now: *p  is  alias for a
   (*p).accNum = 123;      // This statement is equal to: a.accNum  = 123;
   (*p).balance = 1000.0;  // This statement is equal to: a.balance = 1000.0;

   p = &b;                 // Now: *p  is  alias for b
   (*p).accNum = 444;      // This statement is equal to: b.accNum  = 444;
   (*p).balance = 9999.0;  // This statement is equal to: b.balance = 9999.0;

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