#include <stdio.h>

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

/* ------------------------------------
   Define a global structure variable
   ------------------------------------ */
struct BankAccount a;

int main(int argc, char *argv[])
{
   a.accNum  = 123;
   a.balance = 1000.0;

   print();    // Invoke function defined inside another file to print a    
}