#include <stdio.h>

/* -------------------------------------------------------------
   Structure definition

   Note: You MUST define the structure BEFORE you can
         define/declare any variable of this structure !!!
   ------------------------------------------------------------- */
struct BankAccount
{
   int    accNum;
   double balance;
};

typedef struct BankAccount BankAccount_t;


int main(int argc, char *argv[])
{
   BankAccount_t b;		// New way to define struct BankAccount
   struct BankAccount  a;	// Old way still works

   a.accNum = 123;
   a.balance = 4000;

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

   /* ===============================================
      Proof that they are the same type of variable
      ================================================ */
   b = a;
   printf("b.accNum = %d  b.balance = %f\n", b.accNum, b.balance);
}