text: #include <stdio.h>
  
  int hello = 5;
  
  void main()
  {
      // Demonstration of REGISTER and EXTERN variable
  
      extern int hello; // Let the compiler know that hello is a global variable
  
      register int count = 1; // The OS may OR may not assign count to a register - it would depend if any register is free OR not
  
      for (; count < hello; count++)
      {
          printf("%d\n", count);
      }
  }
  